回油噴嘴 return-flow burner: 回油噴嘴return type burner: 回流式燃燒器return flow: 回歸水流; 逆流回流burner air flow: 燃燒器風(fēng)流direct-flow burner: 順流噴咀下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯