| 单词 | flint-coal |
| 释义 | > as lemmasflint-coal flint-coal n. (see quot.). ΘΚΠ the world > the earth > minerals > types of mineral > hydrocarbon minerals > [noun] > coal > hard coal hard coal1653 stone-coal1708 flint-coal1841 durain1919 1841 C. H. Hartshorne Salopia Antiqua 427 Flint Coal a coal measure so called, partly from its hardness, and partly from reposing upon a siliceous rock. < as lemmas |
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