It is pointed out that a certain of relationship is existed between the coal seams and the system tracts in temporal order and spatial disposition.
指出煤层与体系域在时间序列和空间配置上存在一定联系。
It is pointed out that a certain of relationship is existed between the coal seams and the system tracts in temporal order and spatial disposition.
指出煤层与体系域在时间序列和空间配置上存在一定联系。
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