copperingn.铜包皮
coppern.铜;铜币;警察;紫铜色;有紫铜色翅膀的小蝴蝶vt.镀铜
copper molybdenum separation铜钼分离
copper aluminium welding rod铜铝焊丝
copper conductivity standard铜导电率标准
copper mould suction casting铜模吸铸法
copper strip for transformer变压器带
copper containing wastewater含铜废水