1) service brake air circuit

行车制动器空气回路
2) wheel brake air circuit

车轮制动器空气回路
3) service brake circuit

行车制动器回路
4) trailer service brake circuit

拖车行车制动器回路
5) service brake air chamber

行车制动器空气腔
6) service brake air pressure

行车制动器空气压力
参考词条