Selectivity comminution of waste PWBs was propitious for metals to enrich in coarse particle fractions.

选择性粉碎有利于金属组分在粗级别富集。

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Also, dielectric was removed from the edges of PWBs using a carbon dioxide laser to expose the CIC for attachment of a heat transfer connector.

还有，为了暴露出铜—殷钢—铜以便与热传导体接触，使用二氧化碳激光器把绝缘材料从印制板边缘除去。

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