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。
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。
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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