| 单词 | copper schist |
| 释义 | > as lemmascopper schist copper schist n. [German kupferschiefer] a dark-coloured bituminous schist impregnated with copper-ore, found in Saxony. ΚΠ 1875 R. Hunt & F. W. Rudler Ure's Dict. Arts (ed. 7) I. 923 Smelting of the Mansfeld copper-schist. < as lemmas |
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