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再生稀有金属
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再生稀有金属
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再生金属冶金
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recycled rare metals
再生稀有金属
从二次资源中重新冶炼出的稀有金属。其原料为各种矿山及冶金废渣、废液、烟尘、工业废渣和废催化剂、废合金、废半导体、废电子元器件等。
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Historical Excerpts
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Historical figures of water science and technology in China
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