汽截止-逆止閥 extraction stop valve: 抽汽截止閥extraction stop and non return valve: 抽汽截止extraction stop and non-return valve: 抽汽截止逆止閥nonreturn valve: 單向閥; 通風(fēng); 止回閥automatic nonreturn valve: 自動逆向閥下載手機(jī)詞典可隨時隨地查詞查翻譯