Doubleau杜布洛doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double coater双面辊涂机double damask八枚花缎double paddle双叶桨double-hump双峰的double voting双重投票Double Floors双层楼板doubled siege双重约束double shears双面剪床double shaper复式牛头刨床double inlets双入口