doublesideadj.双边的
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double crankless press两点式无曲柄压力机
double chain structure复链状构造
double concave glasses双凹透镜
Double-circle target双圆靶
Double-layer trellis双层棚榘
double ringing slotter双轮铣槽机
double-longeron wing双梁机翼
double-recoil method双反冲法
double layer-stenter双层拉幅机
double layer epidermis双层表皮