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  • A soft ferritic stainless steel was introduced which could be manufactured for the commemorative and entertaining coin.

    介绍一种可以制作纪念币以及娱乐用币材料的软质铁素体不锈钢。

    youdao

  • A soft ferritic stainless steel was introduced which could be manufactured for the commemorative and entertaining coin.

    介绍一种可以制作纪念币以及娱乐用币材料的软质铁素体不锈钢。

    youdao

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