开关用于接地和回路短接。

Quick earthing switch is applied to earthing and loop shorting.

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注意：不能短接安全回路及轿门，厅门接点。

Attention: do not bridge over safety devices and door contacts!

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这里要接一根短钻铤。

We need a short drill collar to put here.

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这里要接一根短钻铤。

We need a short drill collar to put here.

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