标志性气体 gas marker
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确定了煤样在不同温度下生成标志气体的规律及CO气体浓度随温度变化的规律，对预测预报煤的自然发火具有重要的理论和实际意义。
The rules for the significant gas produced by coal samples and the rules for co consistency changing by temperature were obtained at different temperature.
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