n.多層壁 multi-layer wall: 多層壁wall layer: 壁層; 壁附面層; 壁面層multi-layer and multi-pass welding: 分層多道焊jet multi-layer dryer: 多層熱風(fēng)烘呢機multi layer co olidation: 多層固結(jié)下載手機詞典可隨時隨地查詞查翻譯