Mineral charcoal
| a term applied to silky fibrous layers of charcoal, interlaminated in beds of ordinary bituminous coal; - known to miners as mother of coal. | See under Charcoal. |
See also: Charcoal, Mineral
| 单词 | mineral charcoal | ||||
| 释义 | Mineral charcoal
See also: Charcoal, Mineral mineral charcoalmineral charcoal[′min·rəl ′chär‚kōl] |
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