“secondary copper”的概念、定义、翻译、参考文献-科学参考

单词	secondary copper
释义	secondary copper Encyclopedia 工学[再生金属]释 secondary copper再生铜以废旧铜金属制品及工业生产过程中铜金属的边角余料为原料，炼制成的铜及铜合金。再生铜资源是铜供应的一个重要组成部分。
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