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 doors refrigerating show box双门冷藏陈列柜
double-throw disconnecting switch双投隔离开关
double sided angle-reading system双向读角系统
double-low defatted rapeseed meal“双低”菜籽脱脂粕
double diffusion precipitation test双向扩散沉淀试验
double-circuit transmission lines同杆双回线路
double action bone splinter forceps双关节骨裂片钳
double-wall steel boxed cofferdam双壁钢吊箱围堰