make-and-break contact

机械专业... ... make-and-break 开合，通断 make-and-break contact 断续触点，闭开触点，通断触点 make-and break cycle 通 …

航海及海运专业英语词... ... make-and-break cam 电路开关凸轮 make-and-break contact 闭开触点 make-and-break device 断 …

接通点,cut... ... ) make contact 接通接点 ) make-and-break contact 通断接点 ) circuit closing contacts 闭路接点，通路接点 ...