1) retarder control valve check
减速器控制阀检查
2) governor control valve check
调速器控制阀检查
3) retarder control valve body
减速器控制阀体
4) retarder hand control valve
减速器手控制阀
5) retarder control valve
减速器控制阀
6) retarder control valve spool
减速器控制阀滑阀
参考词条