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The type of coal - forming is humic coal, vitrinite is a main variations of coal maceral.煤的成因類型以腐植煤為主, 鏡質(zhì)組為主要的顯微煤巖組分.There are relationships between absorption and proximate analyses, maceral analyses and ultimate analys...

maceral的音標：maceral的英式發(fā)音音標為：['m?s?r?l]maceral的美式發(fā)音音標為：['m?s?r?l]...

n.二重煤素質(zhì)...

bimaceral的音標：bimaceral的英式發(fā)音音標為：['b?m?s?r?l]bimaceral的美式發(fā)音音標為：['b?m?s?r?l]...

n.煤中礦物組分的細微組織，煤素質(zhì)...