基本解释[商业]挂车制动器阀英汉例句双语例句Diagraph spring pneumatic brake valve is widely used as control valve for tractor - trailer braking system.膜片弹簧式气制动阀作为控制阀已广泛地应用于拖拉机挂车制动系统。trailer brake-valve更多例句专业释义商业挂车制动器阀