当开关闭合时，还会有相应的输入元件。

These can be combined with the appropriate input elements when the switch is closed.

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由于只有在特定的开关闭合时才会发生这种现象，所以很难诊断。

This may occur only when certain switches are closed, so it can be very difficult to diagnose.

youdao

捏动刹把，设在刹把上的机械常开开关闭合，控制器随之使输出停止。

Pinch the brake, the witch on the brake, which is normally opened, will be closed, and the controller will stop the battery outputs.

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