对含水量较大煤层火灾的化学反应原理进行了分析，找出了此类火灾事故化学反应生成物成分的组成规律。

The paper analyzed the chemical reaction principle of the high moisture large seam fire. The paper found the composed law of the chemical reaction product components for the fire accident.

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论述了空心阴极放电时，其内部化学反应生成物的迁移、扩散、蒸发和溅射。

While hollow cathode being discharged, migration, diffusion, evaporation and sputtering of reaction products were analyzed.

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Right? In other words I've got the stoichiometric coefficients in there and the values, and I'm subtracting the reactants from products -1652kJ/mol wind up with minus 1652 kilojoules per mole.

对吧？换句话说这里我用了化学,计量系数和生成热的值，从生成物中减去反应物,最后得到。

麻省理工公开课 - 热力学与动力学课程节选