doubledutyadj.两用的
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double coil filament双线圈灯丝
double curve turnout[电] 双开道岔
double-spot tuning双点调谐
double-head wrench双头扳手
double pipe grouting双重管注浆
double-lane system双轨制
double-disc harrow双列圆盘耙
Double Syllable Verb双音节动词
double triangle boom双三角钻臂
double-side planer双面刨床