光滑管流 smooth pipe: 光滑管道; 光面管smooth flow: 平滑憐; 平滑流; 平穩(wěn)流動smooth pipe expansion joint: 光面管補(bǔ)償器smooth steel pipe: 光面鋼板; 光面鋼管smooth and normal flow of the blood: 血脈調(diào)和流暢下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯