It is the active groups that lead to self ignition of coal.

“活性基团”是导致煤自燃的主要因素。

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The prerequisite for temperature rising of coal is presented by analyzing the thermal balance relationship in the process of coal self ignition.

通过对煤自燃过程的热平衡关系进行分析，导出了煤体氧化蓄热升温的必要条件的数学表达式。

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Water played an important role in self-ignition of ferrous sulfide.

水在硫化亚铁的自热和自燃过程中有至关重要的作用。

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There will be a self-ignition of the UDMH and if it does not all burn up, it will be so dispersed there will not be a critical concentration.

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