diff --git a/DentistryHandpieces/MainWindow.xaml b/DentistryHandpieces/MainWindow.xaml
index 36578b0..291d7e2 100644
--- a/DentistryHandpieces/MainWindow.xaml
+++ b/DentistryHandpieces/MainWindow.xaml
@@ -1093,12 +1093,8 @@
                     <Grid Grid.Row="1" Margin="0,14,0,0">
                         <Grid.ColumnDefinitions>
                             <ColumnDefinition Width="*" />
-                            <ColumnDefinition Width="*" />
                         </Grid.ColumnDefinitions>
-                        <Button Content="保存空载转速设置"
-                                Command="{Binding SaveNoLoadSpeedSettingCommand}"
-                                Margin="0,0,8,0" />
-                        <Button Grid.Column="1"
+                              <Button Grid.Column="1"
                                 Content="{Binding NoLoadSpeedTestButtonText}"
                                 Command="{Binding RecordNoLoadSpeedCommand}"
                                 Style="{StaticResource StartButtonStyle}"