double-un.字母wdoubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份Double-collared Seedeatern.双领食籽雀double-compound turbo jet双轴涡轮喷气发动机double-staining technique双重染色技术double-cropping rice area双季稻区double-side-restriction双侧限制double-frequency inverter双频逆变器double least squares method二重最小平方法double cover plate riveting双盖板铆接double antibody ABC-ELISA双抗体夹心ABC-ELISAdouble-sided linear motor双侧面直线电动机