double fan双风扇,二联通风机
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double mould-board ridging plough双壁起垄犁
double glow plasma surface alloying双层辉光离子渗金属
double integration delta modulation双重积分增量调制
Double cut off protection device.双重断电保护装置。
double absorption heat transformers双吸收式热变换器
double-layer participating medium双层介质
double-focusing mass spectrograph双聚焦质谱仪
double satellites navigation system“双星”导航系统
Double fitting for tabulated curves列表曲线的双圆弧拟合法