Greater degree of coalification makes more obvious anisotropy.
煤化程度越高，煤的各向电异性越明显。
It has been found that the pore characteristics of lump coal mainly depend on degree of coalification, types of macerals, content of inorganic matters and intensity of fissuring.
研究表明：煤的孔隙特征主要取决于煤化程度、显微煤岩组份、矿物质含量和断裂破坏强度。
The relationship between the properties of coals with different coalification degree and quality of their briquets were investigated.
研究了14种不同煤化程度煤的性质与其型煤质量的关系。
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