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金屬材料基礎知識(0/0)

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時間:2021-07-12 15:27:14 | 瀏覽次 | 已有條評論

金屬材料是由金屬元素或以金屬元素為主要材料構成的并具有金屬特性的工程材料。《金屬材料基礎知識》.ppt

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