double tapph.
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double pipes heat exchanger套管式换热器
double density distribution偶极密度分布
double - object sentences双宾语结构
Double circular-arc gears双圆弧齿轮
double-shielded enclosure双屏蔽外壳
double standard pitch auger双标准螺距螺旋
double closed-loop system双闭环系统
double crystal spectrograph双晶摄谱仪
Double iron combined roller双金属复合辊筒