sound trigger switch 声音触发器开关 ; 声音触发开关
ripper lever trigger switch 裂土器杠杆触发开关
sideshift trigger switch 侧移触发开关
impactor trigger switch 模锻锤起动器开关
Adjustable pressure based trigger switch 可调式压力平台开关
asymmetrical AC trigger switch 不对称交流触发开关
induction non-trigger switch 感应无触点开关
thyratron trigger switch circuit 闸流管开关电路
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