Factors such as buried depth, volatile matter of raw coal, water content and ash content in raw coal can produce influence upon gas content to some extent.

分析认为：研究区煤层气含量各煤层差异性较大，埋深、原煤挥发分、原煤水分、灰分产率等因素对煤层气含量均有一定的影响。

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The instrument can analyze water content, ash and volatile components of coal samples simultaneously, respectively or in any combination.

仪器对煤的水分、灰分和挥发分可以同时测定，也可以单独测定或作任意组合测定。

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