kennel coal 长焰煤;浊煤...fault coal 劣质煤...adustion of coal 煤的可燃性...sea coal 煤粉...coal n.煤,木炭vt.加煤vi.加...faulty coal 劣质煤...cannel coal 长焰煤;烛煤...carbonization of coal 煤之碳化...chinley coal 高级烟煤...washed coal 洗煤...jet coal 长焰煤;烛煤...candle coal 长焰煤;烛煤...carbonization properties of coal 煤之碳化性质...algae coal 藻煤...gas coal 气煤...coal pyrolysis 煤的热分解...charred coal 焦煤...wood coal 褐煤...caking coal 粘结性煤...coal hydrogention 煤的氢化...carbonaceous coal 半无烟煤...
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