double six双六
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double length shift双倍长移位
double-arched LDA双拱形LDA
double - strander双捻机
double-mirror set双镜装置
double wall bellows双壁波纹管
double muscled rump双肌尻
double - injector双进样器
double-wire datum双丝基准
Double Sculls Final双人双桨决赛
double-action die双效冲模