doublemakeadj.双闭合的doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double displacement双取代double presumptions双重推定double transmission双波发射,双透射效应,双工发送double layer fabric双层组织double line railway双线铁道, 复线铁道double cleaner shoe清粮室双筛架double sliding mode双滑模double quantum well双量子阱double-time fitho二灰结石double-faced pile双面起毛