残余铜含量越高，晶界与基体界面氧化腐蚀越严重，热脆性倾向越大；
The more the content of residual copper in steel, the more severely the oxidation corrosion occurs on grain boundary and matrix, the greater the hot brittleness tendency;
研究了沉淀母液中残余铜的除去方法，使之再生，可回用于碱性蚀刻液的生产。
Researches on the removal methods of remaining copper in the mother liquor are conducted, making it rise again and utilizing it.
研究了沉淀母液中残余铜的除去方法，使之再生，可回用于碱性蚀刻液的生产。
Researches on the removal methods of remaining copper in the mother liquor are conducted, making it rise again and utilizing it.
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