1) selector spool pressure passage
选择器滑阀压力通道
2) selector spool
选择器滑阀
3) selector valve spool
选择器阀滑阀
4) selector and pressure control valve
选择器和压力控制阀
5) selector pressure control valve
选择器压力控制阀
6) system pressure selector valve
系统压力选择器阀
参考词条