履带制动器阀部分
track brake valve section
履带制动器分解器阀
track brake resolver valve
履带制动器控制阀
track brake control valve
履带制动器松放压力
track brake release pressure
履带制动器松放压力检查
track brake release pressure check
变速箱制动器压力
transmission brake pressure
辅助制动器先导阀
secondary brake pilot valve
膜片式动力制动器
diaphragm-type power brake