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There are phyteral cell remaining pore , matrix pore and new -forming pore in coal. The pores of remaining phyteral cell mainly are complicated dentritic structure, and the effective porosity is high.
煤中发育植物细胞残留孔隙、基质孔隙和次生孔隙,植物细胞残留孔隙主要为复杂孔隙树结构,有效孔隙率高。
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