1) tractor retarder air pressure
拖拉机减速器气压
2) tractor hydraulic retarder
拖拉机液压减速器
3) tractor retarder oil pressure
拖拉机减速器油压
4) tractor retarder
拖拉机减速器
5) tractor retarder control valve
拖拉机减速器控制阀
6) tractor air/hydraulic actuator
拖拉机气压/液压致动器
参考词条