double X双X(染色体)
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double stars双星图
doubled sign双签名
Double gates双栅
doublepistonn.双活塞
double sugar双糖
double eaves重檐
double spine复齿锯
double divan双人长沙发
double issue合刊
double gains双赢