分词翻译
投影的英语翻译：
projection
【计】 projection
【化】 project; projection; projecture
【医】 aerial image; projection; projection of image管的英语翻译：
canal; duct; fistula; guarantee; meatus; pipe; tube; wind instrument
【化】 pipe; tube
【医】 canal; canales; canalis; channel; duct; ductus; salpingo-; salpinx
syringo-; tuba; tube; tubi; tubing; tubo-; tubus; vas; vaso-; vessel
