battery-regulating switch 蓄电池调整开关
step regulating switch [电] 分级调节开关
voltage regulating switch 调压开关
load voltage regulating switch 有载调压开关
Regulating a switch 调节一个开关
switch regulating 开关调节
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Switch should match sequence of lighting fixture control. Direction turn and speed regulating switch of fan should work well.
开关与灯具控制顺序相对应，风扇的转向及调速开关应正常。
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