短語詞組短語bituminous soft coal act 菸煤法bituminous brown coal 瀝青質褐煤;瀝青煤bituminous lump coal 菸煤塊bituminous s coal 菸煤;瀝青煤low volatile bituminous coal 低揮發(fā)分菸煤;低揮發(fā)蒸汽煤high bituminous coal 高菸煤;高瀝青煤lower bituminous coal 低瀝青煤;低菸煤bituminous coal fines 菸煤細粉 返回 bituminous coal