基本解释[交通運輸工程]操作閥杆词组短语短語throttle valve operating lever 節流閥操作杆control valve operating lever 控制閥操作杆;節制閥操作杆operating lever for reverse valve [鉄路]廻動閥操縱杠杆operating valve lever更多词组专业释义交通運輸工程操作閥杆