最終更新日：2025/11/29
Archaeologists confirmed that the blade was made from natural steel, a type of steel produced by directly refining cast iron in a finery or (as in wootz) by a direct process from the ore.
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Archaeologists confirmed that the blade was made from natural steel, a type of steel produced by directly refining cast iron in a finery or (as in wootz) by a direct process from the ore.
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