倒流反循環(huán)沖洗回流,返流回流管逆流回流backflow barrier: 逆止閥backflow channel: 回流水道backflow connection: 回流管; 交叉接合backflow damper: 回流緩沖器backflow effect: 淺底背流效應(yīng)下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯