diff --git a/ReportWindow1.xaml.cs b/ReportWindow1.xaml.cs
index e7b9ff3..cb02d4a 100644
--- a/ReportWindow1.xaml.cs
+++ b/ReportWindow1.xaml.cs
@@ -3,6 +3,7 @@ using OfficeOpenXml;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Configuration;
 using System.Data.SQLite;
 using System.IO;
 using System.Linq;
@@ -22,6 +23,8 @@ namespace ShanghaiEnvironmentalTechnology
 
     public partial class ReportWindow1 : Window
     {
+
+        private readonly string _lang = ConfigurationManager.AppSettings["Language"] ?? "zh-CN";
         private const int PageSize = 10;
         private int currentPage = 1;
         private int totalRecords = 0;
@@ -125,8 +128,10 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void UpdatePageInfo()
         {
-            // 保持原有分页信息逻辑
-            PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
+            if (_lang == "en-US")
+                PageInfo.Text = $"Page {currentPage} / {Math.Ceiling((double)totalRecords / PageSize)} | Total: {totalRecords} records";
+            else
+                PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
         }
 
         private void PreviousPage_Click(object sender, RoutedEventArgs e)
@@ -162,33 +167,43 @@ namespace ShanghaiEnvironmentalTechnology
         {
             if (sender is FrameworkElement element && element.Tag is int id)
             {
-                var result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除",
-                                           MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                MessageBoxResult result;
+
+                if (_lang == "en-US")
+                    result = MessageBox.Show($"Delete record ID: {id} ?", "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                else
+                    result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
                 if (result == MessageBoxResult.Yes)
                 {
                     DeleteRecordFromDb(id);
-                    // 刷新当前页数据
                     LoadData(_currentStartDate, _currentEndDate);
                 }
             }
         }
 
-        // 新增：批量删除功能
+
         private void BatchDeleteButton_Click(object sender, RoutedEventArgs e)
         {
             var selectedIds = _records.Where(r => r.IsSelected).Select(r => r.Id).ToList();
             if (!selectedIds.Any())
             {
-                MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Please select records to delete", "Tip", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                 return;
             }
 
-            var result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除",
-                                       MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            MessageBoxResult result;
+            if (_lang == "en-US")
+                result = MessageBox.Show($"Delete {selectedIds.Count} selected records?", "Confirm Batch Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            else
+                result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
             if (result == MessageBoxResult.Yes)
             {
                 BatchDeleteFromDb(selectedIds);
-                // 刷新当前页数据
                 LoadData(_currentStartDate, _currentEndDate);
             }
         }
@@ -238,69 +253,79 @@ namespace ShanghaiEnvironmentalTechnology
             }
 
             DateTime? endDate = EndDatePicker.SelectedDate;
-
             if (endDate.HasValue)
             {
                 endDate = endDate.Value.Date.AddDays(1).AddTicks(-1);
             }
 
-            // 步骤2：读取CO2表数据
             List<CO2Record> co2Records = ReadCO2RecordsFromDatabase(startDate, endDate);
             if (co2Records == null || !co2Records.Any())
             {
-                MessageBox.Show("排气流表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                if (_lang == "en-US")
+                    MessageBox.Show("No data to export", "Tip", MessageBoxButton.OK, MessageBoxImage.Warning);
+                else
+                    MessageBox.Show("排气流表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                 return;
             }
 
-            // 步骤3：导出Excel
             bool exportSuccess = ExportCO2RecordsToExcel(co2Records);
             if (exportSuccess)
             {
-                MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export successful!", "Success", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
             }
             else
             {
-                MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export failed! File may be in use.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
 
+
         private bool ExportCO2RecordsToExcel(List<CO2Record> records)
         {
             try
             {
-                // WPF 原生保存对话框（替代 WinForms）
                 SaveFileDialog saveDialog = new SaveFileDialog
                 {
-                    Filter = "Excel文件 (*.xlsx)|*.xlsx",
-                    FileName = $"排气流记录_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
-                    Title = "保存排气流记录"
+                    Filter = _lang == "en-US" ? "Excel File (*.xlsx)|*.xlsx" : "Excel文件 (*.xlsx)|*.xlsx",
+                    FileName = $"FlowRecords_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
+                    Title = _lang == "en-US" ? "Save Flow Records" : "保存排气流记录"
                 };
 
-                bool? result = saveDialog.ShowDialog(); if (!(result ?? false)) return false;
+                bool? result = saveDialog.ShowDialog();
+                if (!(result ?? false)) return false;
 
+                ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
 
-
-                // EPPlus 许可设置（.NET 8 必须显式设置）
-                ExcelPackage.LicenseContext = LicenseContext.NonCommercial; // 非商业用途
-
-                // 创建并写入Excel
                 using (ExcelPackage package = new ExcelPackage(new FileInfo(saveDialog.FileName)))
                 {
-                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("排气流记录");
+                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Flow Records");
 
-                    // 表头（对应DataGrid列）
-                    worksheet.Cells[1, 1].Value = "排气流流量L/min";
-                    worksheet.Cells[1, 2].Value = "压力（pa）";
-                    worksheet.Cells[1, 3].Value = "时间";
+                    // 双语表头
+                    if (_lang == "en-US")
+                    {
+                        worksheet.Cells[1, 1].Value = "Flow (L/min)";
+                        worksheet.Cells[1, 2].Value = "Pressure (Pa)";
+                        worksheet.Cells[1, 3].Value = "Time";
+                    }
+                    else
+                    {
+                        worksheet.Cells[1, 1].Value = "排气流流量L/min";
+                        worksheet.Cells[1, 2].Value = "压力（pa）";
+                        worksheet.Cells[1, 3].Value = "时间";
+                    }
 
-                    // 表头样式（加粗、居中）
                     using (var headerRange = worksheet.Cells[1, 1, 1, 6])
                     {
                         headerRange.Style.Font.Bold = true;
                         headerRange.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
                     }
 
-                    // 填充数据（从第2行开始）
                     for (int i = 0; i < records.Count; i++)
                     {
                         int row = i + 2;
@@ -310,18 +335,17 @@ namespace ShanghaiEnvironmentalTechnology
                         worksheet.Cells[row, 3].Value = record.RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
                     }
 
-                    // 自动调整列宽
                     worksheet.Cells.AutoFitColumns();
-
-                    // 保存文件
                     package.Save();
                 }
-
                 return true;
             }
             catch (Exception ex)
             {
-                MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show($"Export failed: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                 return false;
             }
         }
diff --git a/ReportWindow2.xaml.cs b/ReportWindow2.xaml.cs
index 50d4aad..33c50f8 100644
--- a/ReportWindow2.xaml.cs
+++ b/ReportWindow2.xaml.cs
@@ -3,6 +3,7 @@ using OfficeOpenXml;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Configuration;
 using System.Data.SQLite;
 using System.IO;
 using System.Windows;
@@ -19,6 +20,8 @@ namespace ShanghaiEnvironmentalTechnology
 
     public partial class ReportWindow2 : Window
     {
+        private readonly string _lang = ConfigurationManager.AppSettings["Language"] ?? "zh-CN";
+
         private const int PageSize = 10;
         private int currentPage = 1;
         private int totalRecords = 0;
@@ -119,7 +122,10 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void UpdatePageInfo()
         {
-            PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
+            if (_lang == "en-US")
+                PageInfo.Text = $"Page {currentPage} / {Math.Ceiling((double)totalRecords / PageSize)} | Total: {totalRecords} records";
+            else
+                PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
         }
 
         private void PreviousPage_Click(object sender, RoutedEventArgs e)
@@ -153,12 +159,16 @@ namespace ShanghaiEnvironmentalTechnology
         {
             if (sender is FrameworkElement element && element.Tag is int id)
             {
-                var result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除",
-                                           MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                MessageBoxResult result;
+
+                if (_lang == "en-US")
+                    result = MessageBox.Show($"Delete record ID: {id} ?", "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                else
+                    result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
                 if (result == MessageBoxResult.Yes)
                 {
                     DeleteRecordFromDb(id);
-                    // 刷新当前页数据
                     LoadData(_currentStartDate, _currentEndDate);
                 }
             }
@@ -170,16 +180,22 @@ namespace ShanghaiEnvironmentalTechnology
             var selectedIds = _records.Where(r => r.IsSelected).Select(r => r.Id).ToList();
             if (!selectedIds.Any())
             {
-                MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Please select records to delete", "Tip", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                 return;
             }
 
-            var result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除",
-                                       MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            MessageBoxResult result;
+            if (_lang == "en-US")
+                result = MessageBox.Show($"Delete {selectedIds.Count} selected records?", "Confirm Batch Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            else
+                result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
             if (result == MessageBoxResult.Yes)
             {
                 BatchDeleteFromDb(selectedIds);
-                // 刷新当前页数据
                 LoadData(_currentStartDate, _currentEndDate);
             }
         }
@@ -222,7 +238,6 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void Export_Click(object sender, RoutedEventArgs e)
         {
-
             DateTime? startDate = null;
             if (DateTime.TryParse(StartDatePicker.SelectedDate?.ToString(), out DateTime tempStartDate))
             {
@@ -230,94 +245,103 @@ namespace ShanghaiEnvironmentalTechnology
             }
 
             DateTime? endDate = EndDatePicker.SelectedDate;
-
             if (endDate.HasValue)
             {
                 endDate = endDate.Value.Date.AddDays(1).AddTicks(-1);
             }
 
-            // 步骤2：读取CO2表数据
-            List<CO2Record> co2Records = ReadCO2RecordsFromDatabase(startDate, endDate);
-
-            if (co2Records == null || !co2Records.Any())
+            List<CO2Record> records = ReadCO2RecordsFromDatabase(startDate, endDate);
+            if (records == null || !records.Any())
             {
-                MessageBox.Show("气阻表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                if (_lang == "en-US")
+                    MessageBox.Show("No data to export", "Tip", MessageBoxButton.OK, MessageBoxImage.Warning);
+                else
+                    MessageBox.Show("气阻表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                 return;
             }
 
-            // 步骤3：导出Excel
-            bool exportSuccess = ExportCO2RecordsToExcel(co2Records);
-            if (exportSuccess)
+            bool success = ExportCO2RecordsToExcel(records);
+            if (success)
             {
-                MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export successful!", "Success", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
             }
             else
             {
-                MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export failed! File may be in use.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
 
+
         private bool ExportCO2RecordsToExcel(List<CO2Record> records)
         {
             try
             {
                 SaveFileDialog saveDialog = new SaveFileDialog
                 {
-                    Filter = "Excel文件 (*.xlsx)|*.xlsx",
-                    FileName = $"气阻记录_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
-                    Title = "保存气阻记录"
+                    Filter = _lang == "en-US" ? "Excel File (*.xlsx)|*.xlsx" : "Excel文件 (*.xlsx)|*.xlsx",
+                    FileName = $"AirResistance_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
+                    Title = _lang == "en-US" ? "Save Air Resistance Records" : "保存气阻记录"
                 };
 
-                // 用户取消选择则返回
-                bool? result = saveDialog.ShowDialog(); if (!(result ?? false)) return false;
+                bool? result = saveDialog.ShowDialog();
+                if (!(result ?? false)) return false;
 
+                ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
 
-                // EPPlus 许可设置（.NET 8 必须显式设置）
-                ExcelPackage.LicenseContext = LicenseContext.NonCommercial; // 非商业用途
-
-                // 创建并写入Excel
                 using (ExcelPackage package = new ExcelPackage(new FileInfo(saveDialog.FileName)))
                 {
-                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("气阻记录");
+                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Air Resistance");
 
-                    // 表头（对应DataGrid列）
-                    worksheet.Cells[1, 1].Value = "气阻hpa";
-                    worksheet.Cells[1, 2].Value = "流量L/min";
-                    worksheet.Cells[1, 3].Value = "时间";
-
-                    // 表头样式（加粗、居中）
-                    using (var headerRange = worksheet.Cells[1, 1, 1, 6])
+                    // 双语表头
+                    if (_lang == "en-US")
                     {
-                        headerRange.Style.Font.Bold = true;
-                        headerRange.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
+                        worksheet.Cells[1, 1].Value = "Air Resistance (hPa)";
+                        worksheet.Cells[1, 2].Value = "Flow (L/min)";
+                        worksheet.Cells[1, 3].Value = "Time";
+                    }
+                    else
+                    {
+                        worksheet.Cells[1, 1].Value = "气阻hpa";
+                        worksheet.Cells[1, 2].Value = "流量L/min";
+                        worksheet.Cells[1, 3].Value = "时间";
+                    }
+
+                    using (var header = worksheet.Cells[1, 1, 1, 3])
+                    {
+                        header.Style.Font.Bold = true;
+                        header.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
                     }
 
-                    // 填充数据（从第2行开始）
                     for (int i = 0; i < records.Count; i++)
                     {
                         int row = i + 2;
-                        var record = records[i];
-                        worksheet.Cells[row, 1].Value = record.Flow;
-                        worksheet.Cells[row, 2].Value = record.Pressure;
-                        worksheet.Cells[row, 3].Value = record.RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
+                        worksheet.Cells[row, 1].Value = records[i].Flow;
+                        worksheet.Cells[row, 2].Value = records[i].Pressure;
+                        worksheet.Cells[row, 3].Value = records[i].RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
                     }
 
-                    // 自动调整列宽
                     worksheet.Cells.AutoFitColumns();
-
-                    // 保存文件
                     package.Save();
                 }
-
                 return true;
             }
             catch (Exception ex)
             {
-                MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show($"Export failed: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                 return false;
             }
         }
 
+
         /// <summary>
         /// 
         /// </summary>
diff --git a/ReportWindow3.xaml.cs b/ReportWindow3.xaml.cs
index b65c83c..3ccb050 100644
--- a/ReportWindow3.xaml.cs
+++ b/ReportWindow3.xaml.cs
@@ -3,6 +3,7 @@ using OfficeOpenXml;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Configuration;
 using System.Data.SQLite;
 using System.IO;
 using System.Windows;
@@ -19,6 +20,8 @@ namespace ShanghaiEnvironmentalTechnology
     }
     public partial class ReportWindow3 : Window
     {
+
+        private readonly string _lang = ConfigurationManager.AppSettings["Language"] ?? "zh-CN";
         private const int PageSize = 10;
         private int currentPage = 1;
         private int totalRecords = 0;
@@ -116,9 +119,13 @@ namespace ShanghaiEnvironmentalTechnology
             LoadData(startDate, endDateString);
         }
 
+
         private void UpdatePageInfo()
         {
-            PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
+            if (_lang == "en-US")
+                PageInfo.Text = $"Page {currentPage} / {Math.Ceiling((double)totalRecords / PageSize)} | Total: {totalRecords} records";
+            else
+                PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
         }
 
         private void PreviousPage_Click(object sender, RoutedEventArgs e)
@@ -148,41 +155,53 @@ namespace ShanghaiEnvironmentalTechnology
         }
 
 
+
         private void DeleteButton_Click(object sender, RoutedEventArgs e)
         {
             if (sender is FrameworkElement element && element.Tag is int id)
             {
-                var result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除",
-                                           MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                MessageBoxResult result;
+                if (_lang == "en-US")
+                    result = MessageBox.Show($"Delete record ID: {id} ?", "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                else
+                    result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
                 if (result == MessageBoxResult.Yes)
                 {
                     DeleteRecordFromDb(id);
-                    // 刷新当前页数据
                     LoadData(_currentStartDate, _currentEndDate);
                 }
             }
         }
 
         // 新增：批量删除功能
+
         private void BatchDeleteButton_Click(object sender, RoutedEventArgs e)
         {
             var selectedIds = _records.Where(r => r.IsSelected).Select(r => r.Id).ToList();
             if (!selectedIds.Any())
             {
-                MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Please select records to delete", "Tip", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                 return;
             }
 
-            var result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除",
-                                       MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            MessageBoxResult result;
+            if (_lang == "en-US")
+                result = MessageBox.Show($"Delete {selectedIds.Count} selected records?", "Confirm Batch Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            else
+                result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
             if (result == MessageBoxResult.Yes)
             {
                 BatchDeleteFromDb(selectedIds);
-                // 刷新当前页数据
                 LoadData(_currentStartDate, _currentEndDate);
             }
         }
 
+
         // 新增：数据库单条删除操作
         private void DeleteRecordFromDb(int id)
         {
@@ -221,7 +240,6 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void Export_Click(object sender, RoutedEventArgs e)
         {
-
             DateTime? startDate = null;
             if (DateTime.TryParse(StartDatePicker.SelectedDate?.ToString(), out DateTime tempStartDate))
             {
@@ -229,93 +247,102 @@ namespace ShanghaiEnvironmentalTechnology
             }
 
             DateTime? endDate = EndDatePicker.SelectedDate;
-
             if (endDate.HasValue)
             {
                 endDate = endDate.Value.Date.AddDays(1).AddTicks(-1);
             }
 
-            // 步骤2：读取CO2表数据
-            List<CO2Record> co2Records = ReadCO2RecordsFromDatabase(startDate, endDate);
-
-            if (co2Records == null || !co2Records.Any())
+            List<CO2Record> records = ReadCO2RecordsFromDatabase(startDate, endDate);
+            if (records == null || !records.Any())
             {
-                MessageBox.Show("防室息阀压力表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                if (_lang == "en-US")
+                    MessageBox.Show("No data to export", "Tip", MessageBoxButton.OK, MessageBoxImage.Warning);
+                else
+                    MessageBox.Show("防窒息阀压力表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                 return;
             }
 
-            // 步骤3：导出Excel
-            bool exportSuccess = ExportCO2RecordsToExcel(co2Records);
-            if (exportSuccess)
+            bool success = ExportCO2RecordsToExcel(records);
+            if (success)
             {
-                MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export successful!", "Success", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
             }
             else
             {
-                MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export failed! File may be in use.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
+
         private bool ExportCO2RecordsToExcel(List<CO2Record> records)
         {
             try
             {
                 SaveFileDialog saveDialog = new SaveFileDialog
                 {
-                    Filter = "Excel文件 (*.xlsx)|*.xlsx",
-                    FileName = $"防室息阀压力记录_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
-                    Title = "保存防室息阀压力记录"
+                    Filter = _lang == "en-US" ? "Excel File (*.xlsx)|*.xlsx" : "Excel文件 (*.xlsx)|*.xlsx",
+                    FileName = $"AntiSuffocation_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
+                    Title = _lang == "en-US" ? "Save Anti-Suffocation Records" : "保存防窒息阀压力记录"
                 };
 
-                // 用户取消选择则返回
-                bool? result = saveDialog.ShowDialog(); if (!(result ?? false)) return false;
+                bool? result = saveDialog.ShowDialog();
+                if (!(result ?? false)) return false;
 
+                ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
 
-                // EPPlus 许可设置（.NET 8 必须显式设置）
-                ExcelPackage.LicenseContext = LicenseContext.NonCommercial; // 非商业用途
-
-                // 创建并写入Excel
                 using (ExcelPackage package = new ExcelPackage(new FileInfo(saveDialog.FileName)))
                 {
-                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("防室息阀压力记录");
+                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Anti-Suffocation");
 
-                    // 表头（对应DataGrid列）
-                    worksheet.Cells[1, 1].Value = "开阀压力pa";
-                    worksheet.Cells[1, 2].Value = "关阀压力pa";
-                    worksheet.Cells[1, 3].Value = "时间";
-
-                    // 表头样式（加粗、居中）
-                    using (var headerRange = worksheet.Cells[1, 1, 1, 6])
+                    // 双语表头
+                    if (_lang == "en-US")
                     {
-                        headerRange.Style.Font.Bold = true;
-                        headerRange.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
+                        worksheet.Cells[1, 1].Value = "Open Pressure (Pa)";
+                        worksheet.Cells[1, 2].Value = "Close Pressure (Pa)";
+                        worksheet.Cells[1, 3].Value = "Time";
+                    }
+                    else
+                    {
+                        worksheet.Cells[1, 1].Value = "开阀压力pa";
+                        worksheet.Cells[1, 2].Value = "关阀压力pa";
+                        worksheet.Cells[1, 3].Value = "时间";
+                    }
+
+                    using (var header = worksheet.Cells[1, 1, 1, 3])
+                    {
+                        header.Style.Font.Bold = true;
+                        header.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
                     }
 
-                    // 填充数据（从第2行开始）
                     for (int i = 0; i < records.Count; i++)
                     {
                         int row = i + 2;
-                        var record = records[i];
-                        worksheet.Cells[row, 1].Value = record.Flow;
-                        worksheet.Cells[row, 2].Value = record.Pressure;
-                        worksheet.Cells[row, 3].Value = record.RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
+                        worksheet.Cells[row, 1].Value = records[i].Flow;
+                        worksheet.Cells[row, 2].Value = records[i].Pressure;
+                        worksheet.Cells[row, 3].Value = records[i].RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
                     }
 
-                    // 自动调整列宽
                     worksheet.Cells.AutoFitColumns();
-
-                    // 保存文件
                     package.Save();
                 }
-
                 return true;
             }
             catch (Exception ex)
             {
-                MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show($"Export failed: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                 return false;
             }
         }
 
+
         /// <summary>
         /// 
         /// </summary>
diff --git a/ReportWindow4.xaml.cs b/ReportWindow4.xaml.cs
index b0039fb..6ac1b5d 100644
--- a/ReportWindow4.xaml.cs
+++ b/ReportWindow4.xaml.cs
@@ -3,6 +3,7 @@ using OfficeOpenXml;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Configuration;
 using System.Data.SQLite;
 using System.IO;
 using System.Windows;
@@ -18,6 +19,9 @@ namespace ShanghaiEnvironmentalTechnology
     }
     public partial class ReportWindow4 : Window
     {
+
+        private readonly string _lang = ConfigurationManager.AppSettings["Language"] ?? "zh-CN";
+
         private const int PageSize = 10;
         private int currentPage = 1;
         private int totalRecords = 0;
@@ -117,7 +121,10 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void UpdatePageInfo()
         {
-            PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
+            if (_lang == "en-US")
+                PageInfo.Text = $"Page {currentPage} / {Math.Ceiling((double)totalRecords / PageSize)} | Total: {totalRecords} records";
+            else
+                PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
         }
 
         private void PreviousPage_Click(object sender, RoutedEventArgs e)
@@ -151,12 +158,15 @@ namespace ShanghaiEnvironmentalTechnology
         {
             if (sender is FrameworkElement element && element.Tag is int id)
             {
-                var result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除",
-                                           MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                MessageBoxResult result;
+                if (_lang == "en-US")
+                    result = MessageBox.Show($"Delete record ID: {id} ?", "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                else
+                    result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
                 if (result == MessageBoxResult.Yes)
                 {
                     DeleteRecordFromDb(id);
-                    // 刷新当前页数据
                     LoadData(_currentStartDate, _currentEndDate);
                 }
             }
@@ -168,16 +178,22 @@ namespace ShanghaiEnvironmentalTechnology
             var selectedIds = _records.Where(r => r.IsSelected).Select(r => r.Id).ToList();
             if (!selectedIds.Any())
             {
-                MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Please select records to delete", "Tip", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                 return;
             }
 
-            var result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除",
-                                       MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            MessageBoxResult result;
+            if (_lang == "en-US")
+                result = MessageBox.Show($"Delete {selectedIds.Count} selected records?", "Confirm Batch Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            else
+                result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
             if (result == MessageBoxResult.Yes)
             {
                 BatchDeleteFromDb(selectedIds);
-                // 刷新当前页数据
                 LoadData(_currentStartDate, _currentEndDate);
             }
         }
@@ -220,7 +236,6 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void Export_Click(object sender, RoutedEventArgs e)
         {
-
             DateTime? startDate = null;
             if (DateTime.TryParse(StartDatePicker.SelectedDate?.ToString(), out DateTime tempStartDate))
             {
@@ -228,30 +243,35 @@ namespace ShanghaiEnvironmentalTechnology
             }
 
             DateTime? endDate = EndDatePicker.SelectedDate;
-
             if (endDate.HasValue)
             {
                 endDate = endDate.Value.Date.AddDays(1).AddTicks(-1);
             }
 
-            // 步骤2：读取CO2表数据
-            List<CO2Record> co2Records = ReadCO2RecordsFromDatabase(startDate, endDate);
-
-            if (co2Records == null || !co2Records.Any())
+            List<CO2Record> records = ReadCO2RecordsFromDatabase(startDate, endDate);
+            if (records == null || !records.Any())
             {
-                MessageBox.Show("单一故障气阻表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                if (_lang == "en-US")
+                    MessageBox.Show("No data to export", "Tip", MessageBoxButton.OK, MessageBoxImage.Warning);
+                else
+                    MessageBox.Show("单一故障气阻表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                 return;
             }
 
-            // 步骤3：导出Excel
-            bool exportSuccess = ExportCO2RecordsToExcel(co2Records);
-            if (exportSuccess)
+            bool success = ExportCO2RecordsToExcel(records);
+            if (success)
             {
-                MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export successful!", "Success", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
             }
             else
             {
-                MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export failed! File may be in use.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
 
@@ -260,60 +280,61 @@ namespace ShanghaiEnvironmentalTechnology
         {
             try
             {
-                // WPF 原生保存对话框（替代 WinForms）
                 SaveFileDialog saveDialog = new SaveFileDialog
                 {
-                    Filter = "Excel文件 (*.xlsx)|*.xlsx",
-                    FileName = $"单一故障气阻记录_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
-                    Title = "保存单一故障气阻记录"
+                    Filter = _lang == "en-US" ? "Excel File (*.xlsx)|*.xlsx" : "Excel文件 (*.xlsx)|*.xlsx",
+                    FileName = $"SingleFaultResistance_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
+                    Title = _lang == "en-US" ? "Save Single Fault Resistance Records" : "保存单一故障气阻记录"
                 };
 
-                // 用户取消选择则返回
-                bool? result = saveDialog.ShowDialog(); if (!(result ?? false)) return false;
+                bool? result = saveDialog.ShowDialog();
+                if (!(result ?? false)) return false;
 
+                ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
 
-                // EPPlus 许可设置（.NET 8 必须显式设置）
-                ExcelPackage.LicenseContext = LicenseContext.NonCommercial; // 非商业用途
-
-                // 创建并写入Excel
                 using (ExcelPackage package = new ExcelPackage(new FileInfo(saveDialog.FileName)))
                 {
-                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("单一故障气阻记录");
+                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Single Fault Resistance");
 
-                    // 表头（对应DataGrid列）
-                    worksheet.Cells[1, 1].Value = "呼气阻力pa";
-                    worksheet.Cells[1, 2].Value = "吸气阻力pa";
-                    worksheet.Cells[1, 3].Value = "时间";
-
-                    // 表头样式（加粗、居中）
-                    using (var headerRange = worksheet.Cells[1, 1, 1, 6])
+                    // 双语表头
+                    if (_lang == "en-US")
                     {
-                        headerRange.Style.Font.Bold = true;
-                        headerRange.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
+                        worksheet.Cells[1, 1].Value = "Expiratory Resistance (Pa)";
+                        worksheet.Cells[1, 2].Value = "Inspiratory Resistance (Pa)";
+                        worksheet.Cells[1, 3].Value = "Time";
+                    }
+                    else
+                    {
+                        worksheet.Cells[1, 1].Value = "呼气阻力pa";
+                        worksheet.Cells[1, 2].Value = "吸气阻力pa";
+                        worksheet.Cells[1, 3].Value = "时间";
+                    }
+
+                    using (var header = worksheet.Cells[1, 1, 1, 3])
+                    {
+                        header.Style.Font.Bold = true;
+                        header.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
                     }
 
-                    // 填充数据（从第2行开始）
                     for (int i = 0; i < records.Count; i++)
                     {
                         int row = i + 2;
-                        var record = records[i];
-                        worksheet.Cells[row, 1].Value = record.Flow;
-                        worksheet.Cells[row, 2].Value = record.Pressure;
-                        worksheet.Cells[row, 3].Value = record.RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
+                        worksheet.Cells[row, 1].Value = records[i].Flow;
+                        worksheet.Cells[row, 2].Value = records[i].Pressure;
+                        worksheet.Cells[row, 3].Value = records[i].RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
                     }
 
-                    // 自动调整列宽
                     worksheet.Cells.AutoFitColumns();
-
-                    // 保存文件
                     package.Save();
                 }
-
                 return true;
             }
             catch (Exception ex)
             {
-                MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show($"Export failed: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                 return false;
             }
         }
@@ -374,7 +395,7 @@ namespace ShanghaiEnvironmentalTechnology
             }
             catch (Exception ex)
             {
-                MessageBox.Show($"读取单一故障气阻表失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                //MessageBox.Show($"读取单一故障气阻表失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                 return null;
             }
         }
diff --git a/ReportWindow5.xaml.cs b/ReportWindow5.xaml.cs
index 2654e64..b24b3d1 100644
--- a/ReportWindow5.xaml.cs
+++ b/ReportWindow5.xaml.cs
@@ -3,6 +3,7 @@ using OfficeOpenXml;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Configuration;
 using System.Data.SQLite;
 using System.IO;
 using System.Windows;
@@ -18,6 +19,8 @@ namespace ShanghaiEnvironmentalTechnology
     }
     public partial class ReportWindow5 : Window
     {
+
+        private readonly string _lang = ConfigurationManager.AppSettings["Language"] ?? "zh-CN";
         private const int PageSize = 10;
         private int currentPage = 1;
         private int totalRecords = 0;
@@ -119,7 +122,10 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void UpdatePageInfo()
         {
-            PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
+            if (_lang == "en-US")
+                PageInfo.Text = $"Page {currentPage} / {Math.Ceiling((double)totalRecords / PageSize)} | Total: {totalRecords} records";
+            else
+                PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
         }
 
         private void PreviousPage_Click(object sender, RoutedEventArgs e)
@@ -148,37 +154,48 @@ namespace ShanghaiEnvironmentalTechnology
             this.Background = brush;
         }
 
+
         private void DeleteButton_Click(object sender, RoutedEventArgs e)
         {
             if (sender is FrameworkElement element && element.Tag is int id)
             {
-                var result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除",
-                                           MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                MessageBoxResult result;
+                if (_lang == "en-US")
+                    result = MessageBox.Show($"Delete record ID: {id} ?", "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                else
+                    result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
                 if (result == MessageBoxResult.Yes)
                 {
                     DeleteRecordFromDb(id);
-                    // 刷新当前页数据
                     LoadData(_currentStartDate, _currentEndDate);
                 }
             }
         }
 
         // 新增：批量删除功能
+
         private void BatchDeleteButton_Click(object sender, RoutedEventArgs e)
         {
             var selectedIds = _records.Where(r => r.IsSelected).Select(r => r.Id).ToList();
             if (!selectedIds.Any())
             {
-                MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Please select records to delete", "Tip", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                 return;
             }
 
-            var result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除",
-                                       MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            MessageBoxResult result;
+            if (_lang == "en-US")
+                result = MessageBox.Show($"Delete {selectedIds.Count} selected records?", "Confirm Batch Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            else
+                result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
             if (result == MessageBoxResult.Yes)
             {
                 BatchDeleteFromDb(selectedIds);
-                // 刷新当前页数据
                 LoadData(_currentStartDate, _currentEndDate);
             }
         }
@@ -221,7 +238,6 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void Export_Click(object sender, RoutedEventArgs e)
         {
-
             DateTime? startDate = null;
             if (DateTime.TryParse(StartDatePicker.SelectedDate?.ToString(), out DateTime tempStartDate))
             {
@@ -229,30 +245,35 @@ namespace ShanghaiEnvironmentalTechnology
             }
 
             DateTime? endDate = EndDatePicker.SelectedDate;
-
             if (endDate.HasValue)
             {
                 endDate = endDate.Value.Date.AddDays(1).AddTicks(-1);
             }
 
-            // 步骤2：读取CO2表数据
-            List<CO2Record> co2Records = ReadCO2RecordsFromDatabase(startDate, endDate);
-
-            if (co2Records == null || !co2Records.Any())
+            List<CO2Record> records = ReadCO2RecordsFromDatabase(startDate, endDate);
+            if (records == null || !records.Any())
             {
-                MessageBox.Show("CO2表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                if (_lang == "en-US")
+                    MessageBox.Show("No CO2 data to export", "Tip", MessageBoxButton.OK, MessageBoxImage.Warning);
+                else
+                    MessageBox.Show("CO2表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                 return;
             }
 
-            // 步骤3：导出Excel
-            bool exportSuccess = ExportCO2RecordsToExcel(co2Records);
-            if (exportSuccess)
+            bool success = ExportCO2RecordsToExcel(records);
+            if (success)
             {
-                MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export successful!", "Success", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
             }
             else
             {
-                MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export failed! File may be in use.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
 
@@ -267,32 +288,16 @@ namespace ShanghaiEnvironmentalTechnology
                 using (SQLiteConnection conn = new SQLiteConnection(CSConstant.DbConnectionString))
                 {
                     conn.Open();
-                    // 构建查询语句，根据开始时间和结束时间进行筛选
                     string query = "SELECT BeginCO2, EndCO2, CO2Added, RecordTime FROM CO2 WHERE 1=1";
 
-                    if (startDate != null)
-                    {
-                        query += " AND RecordTime >= @StartDate";
-                    }
-
-                    if (endDate != null)
-                    {
-                        query += " AND RecordTime <= @EndDate";
-                    }
-
+                    if (startDate != null) query += " AND RecordTime >= @StartDate";
+                    if (endDate != null) query += " AND RecordTime <= @EndDate";
                     query += " ORDER BY RecordTime";
 
                     using (SQLiteCommand cmd = new SQLiteCommand(query, conn))
                     {
-                        if (startDate != null)
-                        {
-                            cmd.Parameters.AddWithValue("@StartDate", startDate);
-                        }
-
-                        if (endDate != null)
-                        {
-                            cmd.Parameters.AddWithValue("@EndDate", endDate);
-                        }
+                        if (startDate != null) cmd.Parameters.AddWithValue("@StartDate", startDate);
+                        if (endDate != null) cmd.Parameters.AddWithValue("@EndDate", endDate);
 
                         using (SQLiteDataReader reader = cmd.ExecuteReader())
                         {
@@ -300,10 +305,10 @@ namespace ShanghaiEnvironmentalTechnology
                             {
                                 records.Add(new CO2Record
                                 {
-                                    BeginCO2 = reader.GetDouble(0),          // 开始CO2浓度（%）
-                                    EndCO2 = reader.GetDouble(1),            // 终CO2浓度（%）
-                                    CO2Added = reader.GetDouble(2),          // CO2浓度相对增加（%）
-                                    RecordTime = reader.GetDateTime(3)       // 时间
+                                    BeginCO2 = reader.GetDouble(0),
+                                    EndCO2 = reader.GetDouble(1),
+                                    CO2Added = reader.GetDouble(2),
+                                    RecordTime = reader.GetDateTime(3)
                                 });
                             }
                         }
@@ -313,7 +318,10 @@ namespace ShanghaiEnvironmentalTechnology
             }
             catch (Exception ex)
             {
-                MessageBox.Show($"读取CO2表失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show($"Failed to read CO2 data: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show($"读取CO2表失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                 return null;
             }
         }
@@ -336,7 +344,7 @@ namespace ShanghaiEnvironmentalTechnology
 
                 // 用户取消选择则返回
                 bool? result = saveDialog.ShowDialog(); if (!(result ?? false)) return false;
-              
+
 
                 // EPPlus 许可设置（.NET 8 必须显式设置）
                 ExcelPackage.LicenseContext = LicenseContext.NonCommercial; // 非商业用途
diff --git a/ReportWindow6.xaml.cs b/ReportWindow6.xaml.cs
index c470a3e..64616f8 100644
--- a/ReportWindow6.xaml.cs
+++ b/ReportWindow6.xaml.cs
@@ -3,6 +3,7 @@ using OfficeOpenXml;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Configuration;
 using System.Data.SQLite;
 using System.IO;
 using System.Windows;
@@ -19,6 +20,8 @@ namespace ShanghaiEnvironmentalTechnology
     }
     public partial class ReportWindow6 : Window
     {
+        private readonly string _lang = ConfigurationManager.AppSettings["Language"] ?? "zh-CN";
+
         private const int PageSize = 10;
         private int currentPage = 1;
         private int totalRecords = 0;
@@ -118,7 +121,10 @@ namespace ShanghaiEnvironmentalTechnology
 
         private void UpdatePageInfo()
         {
-            PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
+            if (_lang == "en-US")
+                PageInfo.Text = $"Page {currentPage} / {Math.Ceiling((double)totalRecords / PageSize)} | Total: {totalRecords} records";
+            else
+                PageInfo.Text = $"第 {currentPage} 页 / 共 {Math.Ceiling((double)totalRecords / PageSize)} 页 {totalRecords}条记录";
         }
 
         private void PreviousPage_Click(object sender, RoutedEventArgs e)
@@ -151,33 +157,43 @@ namespace ShanghaiEnvironmentalTechnology
         {
             if (sender is FrameworkElement element && element.Tag is int id)
             {
-                var result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除",
-                                           MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                MessageBoxResult result;
+                if (_lang == "en-US")
+                    result = MessageBox.Show($"Delete record ID: {id} ?", "Confirm Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                else
+                    result = MessageBox.Show($"确定要删除ID为 {id} 的记录吗？", "确认删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
                 if (result == MessageBoxResult.Yes)
                 {
                     DeleteRecordFromDb(id);
-                    // 刷新当前页数据
                     LoadData(_currentStartDate, _currentEndDate);
                 }
             }
         }
 
+
         // 新增：批量删除功能
         private void BatchDeleteButton_Click(object sender, RoutedEventArgs e)
         {
             var selectedIds = _records.Where(r => r.IsSelected).Select(r => r.Id).ToList();
             if (!selectedIds.Any())
             {
-                MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Please select records to delete", "Tip", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("请先选择要删除的记录", "提示", MessageBoxButton.OK, MessageBoxImage.Information);
                 return;
             }
 
-            var result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除",
-                                       MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            MessageBoxResult result;
+            if (_lang == "en-US")
+                result = MessageBox.Show($"Delete {selectedIds.Count} selected records?", "Confirm Batch Delete", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            else
+                result = MessageBox.Show($"确定要删除选中的 {selectedIds.Count} 条记录吗？", "确认批量删除", MessageBoxButton.YesNo, MessageBoxImage.Warning);
+
             if (result == MessageBoxResult.Yes)
             {
                 BatchDeleteFromDb(selectedIds);
-                // 刷新当前页数据
                 LoadData(_currentStartDate, _currentEndDate);
             }
         }
@@ -218,9 +234,9 @@ namespace ShanghaiEnvironmentalTechnology
             }
         }
 
+
         private void Export_Click(object sender, RoutedEventArgs e)
         {
-
             DateTime? startDate = null;
             if (DateTime.TryParse(StartDatePicker.SelectedDate?.ToString(), out DateTime tempStartDate))
             {
@@ -228,29 +244,35 @@ namespace ShanghaiEnvironmentalTechnology
             }
 
             DateTime? endDate = EndDatePicker.SelectedDate;
-
             if (endDate.HasValue)
             {
                 endDate = endDate.Value.Date.AddDays(1).AddTicks(-1);
             }
 
-            // 步骤2：读取CO2表数据
-            List<CO2Record> co2Records = ReadCO2RecordsFromDatabase(startDate, endDate);
-            if (co2Records == null || !co2Records.Any())
+            List<CO2Record> records = ReadCO2RecordsFromDatabase(startDate, endDate);
+            if (records == null || !records.Any())
             {
-                MessageBox.Show("CO2表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
+                if (_lang == "en-US")
+                    MessageBox.Show("No CO2 data to export", "Tip", MessageBoxButton.OK, MessageBoxImage.Warning);
+                else
+                    MessageBox.Show("CO2表中无数据，无法导出", "提示", MessageBoxButton.OK, MessageBoxImage.Warning);
                 return;
             }
 
-            // 步骤3：导出Excel
-            bool exportSuccess = ExportCO2RecordsToExcel(co2Records);
-            if (exportSuccess)
+            bool success = ExportCO2RecordsToExcel(records);
+            if (success)
             {
-                MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export successful!", "Success", MessageBoxButton.OK, MessageBoxImage.Information);
+                else
+                    MessageBox.Show("数据已成功导出到Excel", "成功", MessageBoxButton.OK, MessageBoxImage.Information);
             }
             else
             {
-                MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show("Export failed! File may be in use.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show("Excel导出失败，请检查文件是否被占用", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
             }
         }
 
@@ -323,69 +345,66 @@ namespace ShanghaiEnvironmentalTechnology
         {
             try
             {
-                // WPF 原生保存对话框（替代 WinForms）
-
                 SaveFileDialog saveDialog = new SaveFileDialog
                 {
-                    Filter = "Excel文件 (*.xlsx)|*.xlsx",
-                    FileName = $"CO2过程记录导出_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
-                    Title = "保存CO2记录"
+                    Filter = _lang == "en-US" ? "Excel File (*.xlsx)|*.xlsx" : "Excel文件 (*.xlsx)|*.xlsx",
+                    FileName = $"CO2_Process_Records_{DateTime.Now:yyyyMMddHHmmss}.xlsx",
+                    Title = _lang == "en-US" ? "Save CO2 Process Records" : "保存CO2过程记录"
                 };
 
-                // 用户取消选择则返回
-                bool? result = saveDialog.ShowDialog(); if (!(result ?? false)) return false;
-                 
+                bool? result = saveDialog.ShowDialog();
+                if (!(result ?? false)) return false;
 
-                // EPPlus 许可设置（.NET 8 必须显式设置）
                 ExcelPackage.LicenseContext = LicenseContext.NonCommercial;
 
-                // 创建并写入Excel
                 using (ExcelPackage package = new ExcelPackage(new FileInfo(saveDialog.FileName)))
                 {
-                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("CO2记录");
+                    ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("CO2 Process");
 
-                    // 表头（对应DataGrid列）
-                    worksheet.Cells[1, 1].Value = "二氧化碳浓度（%）";
-                    worksheet.Cells[1, 2].Value = "压力（pa）";
-
-                    worksheet.Cells[1, 3].Value = "时间";
-
-                    // 表头样式（加粗、居中）
-                    using (var headerRange = worksheet.Cells[1, 1, 1, 6])
+                    // 双语表头
+                    if (_lang == "en-US")
                     {
-                        headerRange.Style.Font.Bold = true;
-                        headerRange.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
+                        worksheet.Cells[1, 1].Value = "CO2 Concentration (%)";
+                        worksheet.Cells[1, 2].Value = "Pressure (Pa)";
+                        worksheet.Cells[1, 3].Value = "Time";
+                    }
+                    else
+                    {
+                        worksheet.Cells[1, 1].Value = "二氧化碳浓度（%）";
+                        worksheet.Cells[1, 2].Value = "压力（pa）";
+                        worksheet.Cells[1, 3].Value = "时间";
+                    }
+
+                    using (var header = worksheet.Cells[1, 1, 1, 3])
+                    {
+                        header.Style.Font.Bold = true;
+                        header.Style.HorizontalAlignment = OfficeOpenXml.Style.ExcelHorizontalAlignment.Center;
                     }
 
-                    // 填充数据（从第2行开始）
                     for (int i = 0; i < records.Count; i++)
                     {
                         int row = i + 2;
-                        var record = records[i];
-                        worksheet.Cells[row, 1].Value = record.Flow;
-                        worksheet.Cells[row, 2].Value = record.Pressure;
-                        //worksheet.Cells[row, 1].Value = record.BeginCO2;
-                        //worksheet.Cells[row, 2].Value = record.EndCO2;
-                        //worksheet.Cells[row, 3].Value = record.CO2Added;
-                        worksheet.Cells[row, 3].Value = record.RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
+                        worksheet.Cells[row, 1].Value = records[i].Flow;
+                        worksheet.Cells[row, 2].Value = records[i].Pressure;
+                        worksheet.Cells[row, 3].Value = records[i].RecordTime.ToString("yyyy-MM-dd HH:mm:ss");
                     }
 
-                    // 自动调整列宽
                     worksheet.Cells.AutoFitColumns();
-
-                    // 保存文件
                     package.Save();
                 }
-
                 return true;
             }
             catch (Exception ex)
             {
-                MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
+                if (_lang == "en-US")
+                    MessageBox.Show($"Export failed: {ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
+                else
+                    MessageBox.Show($"导出失败：{ex.Message}", "错误", MessageBoxButton.OK, MessageBoxImage.Error);
                 return false;
             }
         }
 
+
         private void HomePage_Click(object sender, RoutedEventArgs e)
         {
             this.Close();