double six双六
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double spike method双同位素指示剂(法)
double clamped beam双端固支梁
double hookes joint双万向节
double ended meedle双端针
double source stock双源库存
double arch culvert双连拱涵
Double aortic valve双主动脉瓣
double monoisosomic双单等臂体的
double treated foil双面处理铜箔
double-sided verb双边动词