1) speed and direction pilot control valve
速度和方向先导控制阀
2) slow speed pilot control valve
低速先导控制阀
3) top speed lock pilot control valve
高速锁先导控制阀
4) pilot control valve
先导控制阀
5) pilot controlled check valve
可控先导单向阀
6) speed/direction control
速度/方向控制
参考词条