Double on双行靠doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double wall sign双壁征double T-steel工字钢double amplituden.倍幅(双幅值)doubledictionaryn.双字典double trisomies双三体性double sweep tee双弯头T形接头double cup shell双杯形件double criterion双重标准; 双本位制double labelling双标记double pneumonian.[医]双侧肺炎