double rig双隐睾
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double-ta-pered muff-joint双圆锥联轴套
double continuous composite beam双层连续组合梁
double reciprocating knife mower双刀割草机
double quantitative similarities双定量相似度
double row hydraulic type pusher双排液压式推钢机
double link jib in parallelogram平行四边形组合臂架
Double-pulse laser lithotripsy双频激光碎石
double-layered metal container双层金属容器外壳
double drift region IMPATT diode双漂移区碰撞雪崩渡越时间二极管