Coaltonn.科尔顿(在美国；西经 82º37' 北纬 39º06')coaln.煤；木炭vt.烧成炭；供应煤vi.加煤；装煤coal derived gas煤成气coal-consuming供电煤耗coal bed texture煤层结构coal pillar size煤柱尺寸coal caving pace放煤步距coal-tar pitch煤焦油沥青coal-base fuel煤基燃料coal barren area无煤区coalescence rate聚结率coal controlling控煤作用