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sep 18, 2947 BC - 中国西汉时已有了关于利用胆水炼铜的湿法冶金记载。 (copy)

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公元前2世纪中国西汉时已有了关于利用胆水炼铜的湿法冶金记载。

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2 May 2023

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sep 18, 2947 BC

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~ 4977 years ago

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