| 单词 | manganese mine |
| 释义 | > as lemmasmanganese mine manganese mine n. ΚΠ 1839 Penny Cycl. XIV. 381/1 It occurs in Devonshire, Cornwall, in the Harz, and most manganese mines. 1961 Current Sci. 30 223/1 (heading) Some observations on piedmontite from Goldongri Manganese Mine. < as lemmas |
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