1) scraper control valve group
铲运机控制阀组件
2) backhoe control valve group
反铲控制阀组件
3) scraper retarder control group
铲运机减速器控制组件
4) scraper control valve
铲运机控制阀
5) scraper control valve detent
铲运机控制阀锁销
6) scraper governor control valve
铲运机调速器控制阀
参考词条