primary throttle valve

valve... ... primary safety valve for inner container 一级安全阀 primary throttle valve 主节流阀 primary valve 主阀 ...

汽车英语速查手... ... primary sleeve (制动主缸)主皮碗 primary throttle valve 主节气门 primary winding (点火线圈)初级绕组 ...

原味... ... primary thickening [植]初生加厚 primary throttle valve 主节流阀 初次节流阀 primary thylakoid 初级类囊体 ...