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 barge jetty煤驳码头
coal mill system制粉系统
coal-mine fire煤矿火灾
coal group co.煤业集团
coal seam mining煤层开采
coal paleobotany煤古植物学
coal board slide煤滑板
coal development煤炭开发
coal tar phenols煤焦油苯酚
coalminer's lung