copperumn.铬铜合金
coppern.铜;铜币;警察;紫铜色;有紫铜色翅膀的小蝴蝶vt.镀铜
copper-zine alloy铜锌合金
copper smelter slag炼钢炉渣
copper installation铜排安装
Copper and aluminum铜与铝
copper ammonia silk铜铵丝
copper mold casting铜型吸铸法
copper tailing yard铜尾矿
copper space factor铜线占空系数
copper wire netting铜丝网
Copper crystallizer结晶器