求翻译：本文根据目前国内外煤层气的勘探开发、研究历史与现状，通过查阅相关科研资料，采用理论对比分析的方法，在分析了煤层气成因、煤层气富集条件的基础上，重点在理论上对煤层气运移产出机理进行研究。是什么意思？

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This article based on the current domestic and international coal bed gas exploration and development, study the history and current status, through access to the relevant scientific information, and a comparative analysis of the theoretical methods in the analysis of coal, coal bed gas causes air-r

This article according to the exploration development, the research history and the present situation which the present domestic and foreign coal beds were mad, through the consult related scientific research material, uses the theory contrast analysis the method, in analyzed the coal bed to be mad

This article under the current domestic and foreign research on coal-bed gas exploration and development, past and present, through access to relevant scientific information, comparative analysis of the theory, analysis of the causes of coal seam gas, coal-bed gas accumulation conditions on the basi

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