switch on 接通 ; 开启 ; 开
Directly switch on 直接接通
switch on coil 线圈上开关 ; 开关
switch on the computer 开电脑
switch on the pump 开动水泵
Switch on the valve 打开阀门 ; 翻开阀门
switch-on 接入 ; [电] 接通
Switch on failure 开关在失败 ; 在失败时切换 ; 故障切换
switch on delay 接通延迟
READY TO SWITCH ON 使变频器具备合闸条件
He snatched up the receiver and his free hand groped for the switch on the bedside lamp.
他一把抓起听筒，空着的手则摸索着找床头灯的开关。
《柯林斯英汉双解大词典》
You switch on, push in the disk and there you are!
你打开开关，把磁盘推进去就行了！
《牛津词典》
They switch on slowly, and they are reluctant to switch off.
它们启动缓慢，并且很难关闭。
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