发动机排气辅助制动装置
exhaust auxiliary brake system
辅助制动安全阀
secondary brake relief valve
辅助制动保持能力试验
secondary brake holding ability test
辅助制动泵剖面
secondary brake pump section
辅助制动阀杠杆
secondary brake valve lever
辅助制动阀滑阀
secondary brake valve spool
辅助制动阀旁通道
secondary brake valve bypass
辅助制动警告灯
secondary brake warning light
辅助制动空气回路
secondary brake air circuit