coalboxn.煤箱;发黑烟的炸弹
coaln.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
Coalfield geology煤田地质
coal-formed gas煤成气
coal pillar width煤柱宽度
coal-based fuel煤基燃料
coal mine roadway矿山巷道
coal bunker level煤仓料位
coal tar remedies[医] 煤焦油类药物
coal seam outcrop煤层露头
coalescing filter凝聚过滤器
coal conglomerate煤砾岩