release（动词,放行）oil
放油
【例词】
secondary brake release oil chamber；
辅助制动松放油室
secondary brake release oil filter
辅助制动松放油滤清器
secondary brake release oil pressure；
辅助制动松放油压力
secondary brake release oil pressure test；
辅助制动松放油压力试验
=====供朋友参考