double ebb双低潮
doubleadj.双重的;成双的;两倍的v.翻一番;使 ... 加倍n.两倍;双份
double leg circles双腿全旋
double seam welder双层缝焊机
double jute willow复式黄麻清纤机
double color graph双色缩图
double-tip baler双嘴打包机
double integration二重积分
double ended probe双头探针
double pole switch双刀开关
double-end punch双头冲
double bed furnace双膛炉