基本解释[交通运输工程]操作阀杆词组短语短语throttle valve operating lever 节流阀操作杆control valve operating lever 控制阀操作杆;节制阀操作杆operating lever for reverse valve [铁路]回动阀操纵杠杆operating valve lever更多词组专业释义交通运输工程操作阀杆