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 isotope derivative method双同位素衍生物法
double-bell charging mechanism双钟装料机构
double-end hexagon ring wrench双头六角扳手
double stage current transformer双级电流互感器
double-random phase-encoding双随机相位编码
double-star positioning system双星定位系统
Double Rope Single Overhand Knot双绳单向半结
double cylinder jacquard machine双针筒提花针织机