废旧紫铜
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mixed copper scraps 杂铜
utilization of copper scraps 废旧紫铜的利用
Utiligation of copper scraps 废铜综合利用
collecting system of copper scraps 铣屑收集系统
copper wire scraps 铜线废料
Scraps copper classification 铜废料分类
copper-containing scraps 含铜废料
Two kinds of ways to solve contact copper scraps are introduced.
介绍了解决触点铜屑的两种方法。
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