选用合适的热力学模型，对合成气直接合成二甲醚的反应进行了化学平衡分析。

Chemical equilibrium in direct synthesis of dimethyl ether from syngas was calculated and analyzed by using an appropriate thermodynamic model.

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本文依据热力学原理，重新审议了理想气体的化学平衡常数。

According to thermodynamic principle, this thesis reconsiders the equilibrium constant of ideal gas reaction.

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通过对碳基复合材料热化学烧蚀机理分析，由质量守恒、能量守恒及系统化学反应的热化学平衡原理，建立相应的热化学和热力学烧蚀模型。

The present paper is devoted to the development and establishment of corresponding thermochemical and thermomechanical ablative models by analyzing flow and C/C composite materials ablative mechanism.

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So, then we go to thermodynamics and chemical equilibrium, and this is really about chemical reactions -- weather a reaction will go, will it be spontaneous, if there an equilibrium, what direction will the reaction be shifted in.

然后我们要讲到热力学和化学平衡,这都和化学反应有关，一个反应是否能发生,是不是能自发反应，如果存在化学平衡，它会朝什么方向移动。

麻省理工公开课 - 化学原理课程节选