coalingn.装煤coaln.煤；木炭vt.烧成炭；供应煤vi.加煤；装煤coal seam stability煤层稳定程度coal-tar industry煤焦油工业coal-gas outburst煤与瓦斯突出coal mining geology煤矿地质学coal containing gas含瓦斯煤岩coal-gasification煤气化coal used for drive动力用煤coal impact cutting冲击破煤coal injection rate煤比coal transportation煤炭运输