[机]?空转控制阀

hydraulically operated direction control valve 液压操纵的方向控制阀, 液动换向阀 idling control valve 空转控制阀 leveling valve 测高控制阀;(车辆)高度控制阀 ..

?缓速制御弁

... idling conditions ==> 空转状态 idling control valve ==> 缓速制御弁 idling current ==> 无效电流=>暗电流 ...