diff --git a/DentistryHandpieces/MainWindow.xaml b/DentistryHandpieces/MainWindow.xaml
index cb63ad5..5880810 100644
--- a/DentistryHandpieces/MainWindow.xaml
+++ b/DentistryHandpieces/MainWindow.xaml
@@ -404,8 +404,8 @@
                                     </Grid.RowDefinitions>
                                     <TextBlock Text="实时千分表" Style="{StaticResource MetricTitle}" />
                                     <TextBlock Grid.Row="1"
-                                           x:Name="RelativeDisplacementText"
-                                           Text="{Binding RelativeDisplacementText}"
+                                           x:Name="DialIndicatorText"
+                                           Text="{Binding DialIndicatorText}"
                                            Style="{StaticResource MetricValue}"
                                            Foreground="#0F766E"
                                            VerticalAlignment="Center" />
@@ -633,7 +633,7 @@
                             Margin="8,0,8,0" />
                         <Button Grid.Column="2"
                             x:Name="StartDisplacementButton"
-                            Content="启动"
+                            Content="{Binding DisplacementTestButtonText}"
                             Command="{Binding StartDisplacementCommand}"
                             Style="{StaticResource StartButtonStyle}"
                             Margin="8,0,8,0" />
@@ -900,7 +900,7 @@
                             Command="{Binding VentValveCommand}"
                             Margin="8,0,8,0" />
                         <Button Grid.Column="3"
-                            Content="启动"
+                            Content="{Binding SpeedTorqueTestButtonText}"
                             Command="{Binding StartSpeedTorqueCommand}"
                             Style="{StaticResource StartButtonStyle}"
                             Margin="8,0,8,0" />
@@ -1019,7 +1019,7 @@
                                 Command="{Binding SaveNoLoadSpeedSettingCommand}"
                                 Margin="0,0,8,0" />
                         <Button Grid.Column="1"
-                                Content="开始空载转速"
+                                Content="{Binding NoLoadSpeedTestButtonText}"
                                 Command="{Binding RecordNoLoadSpeedCommand}"
                                 Style="{StaticResource StartButtonStyle}"
                                 Margin="8,0,0,0" />
diff --git a/DentistryHandpieces/MainWindowViewModel.cs b/DentistryHandpieces/MainWindowViewModel.cs
index 02586ff..a6a48e4 100644
--- a/DentistryHandpieces/MainWindowViewModel.cs
+++ b/DentistryHandpieces/MainWindowViewModel.cs
@@ -173,6 +173,7 @@ public sealed class MainWindowViewModel : ObservableObject
     private int _snapshotWriteInProgress;
     private bool _sessionExported;
     private double _dialZero;
+    private double _dialIndicator;
     private double _relativeDisplacement;
     private double _axialAxisPosition;
     private double _axialSampleStart;
@@ -210,7 +211,7 @@ public sealed class MainWindowViewModel : ObservableObject
     private bool _isVentValveOpen;
     private bool _hasShownSpeedTorqueEndWarnings;
     private DateTime _lastParameterReadFailureLogAt = DateTime.MinValue;
-    private string _relativeDisplacementText = "0.000 mm";
+    private string _dialIndicatorText = "0.000 mm";
     private string _axialAxisPositionText = "0.000 mm";
     private string _axialSamplePairText = "-- / --";
     private string _axialSampleDifferenceText = "--";
@@ -241,6 +242,9 @@ public sealed class MainWindowViewModel : ObservableObject
     private string _holdTorqueInput = "0";
     private string _torqueHoldTimeInput = "0";
     private string _axialForceSetpointModeButtonText = "轴向跳动力设置";
+    private string _displacementTestButtonText = "测试";
+    private string _speedTorqueTestButtonText = "测试";
+    private string _noLoadSpeedTestButtonText = "测试";
     private string _displacementResetButtonText = "复位";
     private string _speedTorqueResetButtonText = "复位";
     private string _ventValveButtonText = "开启通气阀";
@@ -502,10 +506,10 @@ public sealed class MainWindowViewModel : ObservableObject
 
     public string PlcTimeoutMillisecondsInput { get; set; } = "2000";
 
-    public string RelativeDisplacementText
+    public string DialIndicatorText
     {
-        get => _relativeDisplacementText;
-        private set => SetProperty(ref _relativeDisplacementText, value);
+        get => _dialIndicatorText;
+        private set => SetProperty(ref _dialIndicatorText, value);
     }
 
     public string AxialAxisPositionText
@@ -652,6 +656,24 @@ public sealed class MainWindowViewModel : ObservableObject
         private set => SetProperty(ref _displacementResetButtonText, value);
     }
 
+    public string DisplacementTestButtonText
+    {
+        get => _displacementTestButtonText;
+        private set => SetProperty(ref _displacementTestButtonText, value);
+    }
+
+    public string SpeedTorqueTestButtonText
+    {
+        get => _speedTorqueTestButtonText;
+        private set => SetProperty(ref _speedTorqueTestButtonText, value);
+    }
+
+    public string NoLoadSpeedTestButtonText
+    {
+        get => _noLoadSpeedTestButtonText;
+        private set => SetProperty(ref _noLoadSpeedTestButtonText, value);
+    }
+
     public string AxialForceSetpointModeButtonText
     {
         get => _axialForceSetpointModeButtonText;
@@ -703,6 +725,7 @@ public sealed class MainWindowViewModel : ObservableObject
             _noLoadSpeedRecord = ReadFloatValue(values, NoLoadSpeedRecordRegister, "空载转速记录");
             _noLoadSpeedErrorRate = ReadFloatValue(values, NoLoadSpeedErrorRateRegister, "转速误差率");
             _realtimePressure = ReadFloatValue(values, PressureDisplayRegister, "压力显示");
+            _dialIndicator = dialIndicator;
             _relativeDisplacement = dialIndicator - _dialZero;
             _axialForce = axialForce;
             _realtimeTorque = realtimeTorque;
@@ -2295,7 +2318,7 @@ public sealed class MainWindowViewModel : ObservableObject
             return;
         }
 
-        if (!await PulsePlcAsync(NoLoadSpeedRecordCoil, "记录空载转速"))
+        if (!await PulsePlcAsync(NoLoadSpeedRecordCoil, "空载转速测试"))
         {
             return;
         }
@@ -2303,6 +2326,7 @@ public sealed class MainWindowViewModel : ObservableObject
         PrepareSessionForNewRun();
         _activeNoLoadSpeedRun = CreateTestRun("空载转速测试");
         _noLoadCaptureDeadline = DateTime.Now.Add(NoLoadCaptureDuration);
+        NoLoadSpeedTestButtonText = "测试中";
         UpdateDataCaptureStatus();
     }
 
@@ -2314,7 +2338,7 @@ public sealed class MainWindowViewModel : ObservableObject
             return;
         }
 
-        if (!await PulsePlcAsync(SpeedTorqueStartCoil, "转速/扭矩启动"))
+        if (!await PulsePlcAsync(SpeedTorqueStartCoil, "转速/扭矩测试"))
         {
             return;
         }
@@ -2327,6 +2351,7 @@ public sealed class MainWindowViewModel : ObservableObject
 
         PrepareSessionForNewRun();
         _isSpeedTorqueRunning = true;
+        SpeedTorqueTestButtonText = "测试中";
         _hasShownSpeedTorqueEndWarnings = false;
         _finalSpeed = null;
         _finalTorque = null;
@@ -2377,6 +2402,7 @@ public sealed class MainWindowViewModel : ObservableObject
             FinalizeSpeedTorqueRun("复位前中止");
             PersistCurrentPayloadSnapshot("转速/扭矩复位前");
             _isSpeedTorqueRunning = false;
+            SpeedTorqueTestButtonText = "测试";
             _realtimeSpeed = 0;
             _realtimeTorque = 0;
             _speedTorqueZero = _speedTorqueAxisPosition;
@@ -2426,7 +2452,7 @@ public sealed class MainWindowViewModel : ObservableObject
             return;
         }
 
-        if (!await PulsePlcAsync(AxialStartCoil, "轴向启动"))
+        if (!await PulsePlcAsync(AxialStartCoil, "轴向测试"))
         {
             return;
         }
@@ -2439,6 +2465,7 @@ public sealed class MainWindowViewModel : ObservableObject
 
         PrepareSessionForNewRun();
         _isDisplacementRunning = true;
+        DisplacementTestButtonText = "测试中";
         _activeDisplacementRun = CreateTestRun("轴向位移动量测试");
         _finalDisplacement = null;
         _finalAxialForce = null;
@@ -2496,6 +2523,7 @@ public sealed class MainWindowViewModel : ObservableObject
             _finalAxialForce = null;
             await UpdateAxialForceFromInputAsync();
             _isDisplacementRunning = false;
+            DisplacementTestButtonText = "测试";
             UpdateDisplacementDisplay();
             Log.Information("轴向复位完成，千分表零点 {DialZero}", _dialZero);
         }
@@ -2703,6 +2731,7 @@ public sealed class MainWindowViewModel : ObservableObject
         }
 
         _isDisplacementRunning = false;
+        DisplacementTestButtonText = "测试";
         _finalDisplacement = Math.Abs(_axialSampleDifference) > 0.000001 ? _axialSampleDifference : _relativeDisplacement;
         _finalAxialForce = GetScaledAxialForce();
         FinalizeDisplacementRun(status);
@@ -2718,7 +2747,7 @@ public sealed class MainWindowViewModel : ObservableObject
 
     private bool TryGetDialValue(out double value)
     {
-        value = _dialZero + _relativeDisplacement;
+        value = _dialIndicator;
         return true;
     }
 
@@ -2798,6 +2827,7 @@ public sealed class MainWindowViewModel : ObservableObject
         }
 
         _isSpeedTorqueRunning = false;
+        SpeedTorqueTestButtonText = "测试";
         _realtimeSpeed = speed;
         _realtimeTorque = torque;
         _finalSpeed = speed;
@@ -2909,7 +2939,7 @@ public sealed class MainWindowViewModel : ObservableObject
 
     private void UpdateDisplacementDisplay()
     {
-        RelativeDisplacementText = $"{FormatDisplacement(_relativeDisplacement)} mm";
+        DialIndicatorText = $"{FormatDisplacement(_dialIndicator)} mm";
         AxialAxisPositionText = $"{FormatDisplacement(_axialAxisPosition)} mm";
         AxialSamplePairText = $"{FormatDisplacement(_axialSampleStart)} / {FormatDisplacement(_axialSampleEnd)} mm";
         AxialSampleDifferenceText = $"{FormatDisplacement(_axialSampleDifference)} mm";
@@ -3245,6 +3275,7 @@ public sealed class MainWindowViewModel : ObservableObject
         _completedRuns.Add(_activeNoLoadSpeedRun);
         _activeNoLoadSpeedRun = null;
         _noLoadCaptureDeadline = null;
+        NoLoadSpeedTestButtonText = "测试";
         PersistCurrentPayloadSnapshot("空载转速记录完成");
         UpdateDataCaptureStatus();
     }