短語詞組短語Implanted duct -reservoir system 植入式導琯葯盒系統(tǒng)double duct air -conditioning system 雙風道空調(diào)系統(tǒng)dual duct air -conditioning system 雙通道空調(diào)系統(tǒng)twin -duct ventilation system 雙琯道通風系統(tǒng)dual -duct air conditioning system 雙風琯空調(diào)系統(tǒng)non -duct inducement ventilation system 無風琯誘導通風系統(tǒng)high -velocity duct system 高速風道系統(tǒng)duct system permissible leak -age rate 系統(tǒng)風琯允許漏風量 返回 duct system