In copper-smelting: the degree of malleability of the copper; the proportion of copper oxide present as an impurity.
单词 | θ209343 |
释义 | society > occupation and work > industry > working with specific materials > working with metal > [noun] > extraction from ore > smelting > stage of metal in (1) pitch1839 In copper-smelting: the degree of malleability of the copper; the proportion of copper oxide present as an impurity. |
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