1)coupling head,挂车制动接头2)trailer brake,挂车制动器3)trailer braking valve,挂车制动阀4)hand control brake valve of trailer,手控挂车制动阀5)brake system for trailer,挂车制动系统6)trailer brake circuit,挂车制动器回路
用法和例句
The improvement of the brake system for trailers of Dongfeng series military tractors was pointed out.