1) tractor retarder control valve
拖拉机减速器控制阀
2) tractor retarder
拖拉机减速器
3) scraper retarder control valve
铲运机减速器控制阀
4) retarder control valve body
减速器控制阀体
5) retarder hand control valve
减速器手控制阀
6) retarder control valve
减速器控制阀
参考词条