当阀门处于远程时，位置指示器可用于微动开关接触装置。

On valves controlled remotely, the position indicators may be used for microswitch contact.

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当阀门处于远程时，位置指示器可用于微动开关接触装置。

On valves controlled remotely, the position indicators may be used for microswitch contact.

youdao