短語詞組短語bituminous soft coal act 煙煤法bituminous brown coal 瀝青質(zhì)褐煤;瀝青煤bituminous lump coal 煙煤塊bituminous s coal 煙煤;瀝青煤low volatile bituminous coal 低揮發(fā)分煙煤;低揮發(fā)蒸汽煤high bituminous coal 高煙煤;高瀝青煤lower bituminous coal 低瀝青煤;低煙煤bituminous coal fines 煙煤細粉 返回 bituminous coal