接通一 off switch: 停机键; 停机开关on and off switch: 电源开关,通断开关; 通断开关on off switch: 双位开关; 通断开关on-and-off switch: 通断开关on-off switch: 换向开关; 启闭开关; 双位开关,双控开关; 转换开关下载手机词典可随时随地查词查翻译