auxiliary valve seat

valve 阀门专业词汇A-Z ... auxiliary stop valve 辅助断流阀 auxiliary valve seat 辅助阀座 auxiliary valve spring 副阀弹簧 ...

valve-... ... auxiliary stop valve 阀 阀 助断流 auxiliary valve seat 阀 阀阀 助 座 auxiliary valve spring 阀阀阀 副 簧 ...