bituminous coal
柯林斯詞典
1. N a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93?×?107?–?3.63?×?107 J/kg 煙煤 (Also called soft coal)
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1. N a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93?×?107?–?3.63?×?107 J/kg 煙煤 (Also called soft coal)