natural steel
Steel made by the direct refining of cast iron in a finery, or (as in the case of wootz) by a direct process from the ore.
By prosthetic means.
plural of reciprocating saw
(of a water supply) Rising to the surface under its own hydrostatic pressure.
考古学者たちは、その刃がフイナリーで鋳鉄を直接精錬して得られる鋼、あるいは(ウーツのように)鉱石から直接得られる鋼で作られていることを確認した。
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