doubleendadj.双端的(两端引出式)doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double slat reel双层拨禾板式拨禾轮double gestation[医] 双胎妊娠double with bath带浴室的双人房间double trapezium对顶梯形double surviving双体分子double washbasin双洗脸盆double focussing双聚焦double pregnancy双胎妊娠double deck cage双层式罐笼double-element双单元