这些开关可接通形成闭合电路。

The switches close the contacts and complete the circuit.

《牛津词典》

直接启动、弹簧复位、正常闭合的邻近限制开关。右击接通或保持断开。

Proximity limit switch, directly actuated, spring returned, normally closed. Right-click for closed or held open.

youdao

表示弹簧复位(闭合)。右击断开或接通电路。

Represents a spring return (make). Right-click to open and close the circuit.

youdao