double ace特级飞行员doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double point pass复式山形穿经double scattering双散射double drawbridge双翼仰开桥double input gate双输入门doubleword length双字长度double projection双像投影,双重投影double name paper双名票据double-side saw双面锯double break jack双断点塞孔Double - acting双作用