断油回路润滑油返回
fuel shutoff circuit oil return
断油装置致动器回路
fuel shutoff actuator circuit
油回路遮断器
agricultural development, comparision
控制面板回路断路器
control panel circuit breaker
闭合油路回油道
loop circuit return passage
铲运机发动机电路断路器
scraper engine circuit breaker
电路断路开关
electrical disconnect switch