double box双窝
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
Double sheet metal双金属片
double stroke bell双击电铃
double differences双差
double sticky tape双面胶带
double sided board两面印制电路板
double image prism双像棱镜
double-leg slide双腿滑挡
double-fold step双蝶步
double cleft-lip双唇裂
double oppositions双重对立