1) secondary brake valve spool
辅助制动阀滑阀
2) secondary brake valve
辅助制动阀
3) jockey valve
辅助滑阀
4) secondary brake release valve
辅助制动松放阀
5) secondary brake relief valve
辅助制动安全阀
6) secondary brake valve lever
辅助制动阀杠杆
参考词条