copperasn.绿矾coppern.铜；铜币；警察；紫铜色；有紫铜色翅膀的小蝴蝶vt.镀铜copper jewellery铜首饰copper sheathing铜套copper aluminate铝酸铜copper hydroxide氢氧化铜copper conductor铜线copper polymetal铜多金属copper convertor炼铜转炉copper corrosion铜片腐蚀copper resources铜资源copper berylliumn.铍铜合金