The study on the deposition system would be the premise and base of the coal exploration, based on the closed relationship between the coal resources and the deposition system.
对沉积体系的研究是煤炭勘探的前提与基础，基于煤炭资源与沉积体系存在密切的关系。
The study on the deposition system would be the premise and base of the coal exploration, based on the closed relationship between the coal resources and the deposition system.
对沉积体系的研究是煤炭勘探的前提与基础，基于煤炭资源与沉积体系存在密切的关系。
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