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单词 native metal
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native metal
native metal n. a metal which occurs naturally in a pure state.
ΚΠ
1757 tr. J. F. Henckel Pyritologia 42 A native metal may lie..in so light and tender a form..as that the noble metal cannot be sludged, but be carried away by the stream.
1858 S. J. Ritchie Wisconsin & its Resources 200 The copper of the south shore..and on Isle Royale, is mostly in the metallic state, and all the valuable working mines are there opened for the native metal.
1922 T. M. Lowry Inorg. Chem. v. 58 Some of them are found ready to hand in the form of native metals, whilst others were prepared by smelting from their ores.
1991 S. Bowman Sci. & Past (BNC) 76 As a native metal, gold required no extraction by smelting.
extracted from nativeadj.
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