reverse tab

例句：

1. 1.The engineer used a reverse tab to disconnect the wires.
   工程师使用反向操作面板来断开电线。
2. 2. The car had a reverse tab that could be used to change gears.
   这辆车有一个反向操作面板，可以用来换挡。
3. 3. The user can use the reverse tab to adjust the volume level.
   用户可以通过反向操作面板来调整音量水平。