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  1. ferroalloy

    • IPA[ˌferōˈaloi]

    美式

    • n.
      an alloy of iron with one or more other metals, used in the production of steel.
    • noun: ferroalloy, plural noun: ferroalloys

  2. 知識+

    • 為什麼南非會注重在於生產鑽石,黃金, 鐵合金

      South Africa is well known for its vast mineral resources possessing approximately 90% of the platinum metals on earth, 80% of the manganese, 73% of the chrome, 45% of the vanadium and 41% of the gold, as well as significant amount of diamonds...