double fin双立尾
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double level grammar双层文法
double - unit face对拉工作面
double roll stripper双辊式摘棉铃机
double acting damper双动减震器
double oil path seal双油路密封
double-word length双字长度
double grip terminal双压接接头
double aortic arches双主动脉弓
double-length word双长字
double sleeper joint双轨枕接头