单词	duct system
释义	duct system 风道系统;管道系统
随便看	four start worm four-state four-state tube four-step four step heat treatment four-step heat treatment four step rule four-storey four-storeyed four-storeys fourstory four story fan four-strand four strand continious casting machine four-strand double crossing over four strand double crossing over four stranded four stranded rope four strand mill four-strand mill four strand rope four strand round sennit four-strands four strand stage four-string banjo 铢1 铢2 铢3 铢4 铢两分寸铢两悉称铢两相称铢分毫析铢寸累积铢施两较とぶ【飛ぶ】とぶくろとぶくろ【戸袋】とぶらうとぶらうとぶらう【弔う】とぶらう【訪う】とべいとべい【渡米】とほ