基本解释[铁路][机] 节制阀，调节阀；阶段制动阀词组短语短语graduating g valve spring 节制阀弹簧graduating g valve 节制阀graduating valve spring [铁路][机]节制阀弹簧;递开阀簧equalizing graduating valve 均衡递动阀;均衡递开阀graduating valve lever 递开阀杆graduating valve更多词组专业释义交通运输工程节制阀