doubleword双字doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double surplus imbalance双顺差式失衡double-deck operations双层经营double dq transformation双dq变换double leaf swing bridge双翼平旋桥Double Life of Veronique两生花/薇洛尼卡的双重生活double digital signature双重数字签名double beneficial result双效益double stand rolling mil双机座轧机double eye type c-hook双孔型C形吊钩double crimp wire screen双皱筛布