The type of coal - forming is humic coal, vitrinite is a main variations of coal maceral.
煤的成因类型以腐植煤为主, 镜质组为主要的显微煤岩组分.
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There are relationships between absorption and proximate analyses, maceral analyses and ultimate analyses.
煤的吸附量与煤层的工业分析 、 显微煤岩分析、元素分析之间有一定的关系.
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