The effects of the feed rate of air, steam and coal on bed temperature, gas composition, calorific value, carbon conversion and gasification efficiency are predicted and analyzed with the model.

在此基础上，还就空气加入量、蒸汽加入量及加煤速率对床温、煤气组成、煤气热值、碳转化率和气化效率的影响做了预测和分析。

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Comparisons of the gas composition of the samples from the coal seams liable and not liable to outburst in several major coal fields have been made.

比较了几个主要突出矿区突出危险煤层与非突出危险煤层煤样的瓦斯成分。

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This paper presents the principle of the design, composition and function of processor applied to computer network in gas-monitored system for safe production of coal mines.

阐述了煤矿安全生产中使用的瓦斯监测系统计算机网络通信处理机的设计原理、结构及其功能。

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Those carbon dioxide levels, in fact, have been dropping in the United States because of evolutions in the composition of electric generation from coal to natural gas, predicated on price structure and federal regulations.

FORBES: Lobbyists Try to Halt State Green Energy Standards