The testing research about enhancing rate by hydraulic cutting seam on outsize coal sample is introduced.

介绍了特大煤样采用水力割缝提高瓦斯渗透率的实验研究.

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Grinding coal sample result is better than the forming fine coal during contact angle measurement.

指出在接触角测量过程中,研磨煤样要比成型粉煤测量效果好.

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Taking coal as experimental coal sample, gas emission characteristics of coal was tested and studied.

以大块煤为实验煤样, 实验研究了大块煤瓦斯放散特性.

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The influence of different coal sample grain gradation distribution on determination of caking index is analyzed.

分析了不同煤样粒级分布对粘结指数测定的影响.

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The sampling and preparing method of coal sample for a CHP plant is introduced.

介绍了某集中供热厂煤样的采取和制备方法.

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