In chapter three and four, we give some state equations of real gas and the thermodynamical analysis in polytropic process based on the theory of ideal gas.
第三、第四章在理想气体的基础上，得出了实际气体状态方程及其多变过程中热力学计算。
Protection system is a logical system for struction. The analysis of reliability of protection system may be reduced to the analysis of reliability of the "three state" logical system.
安全保护系统从结构上看是逻辑系统，它的可靠性分析可以归结为三状态逻辑系统的可靠性分析。
Chapter Three is to illustrate the state of the school for children of migrated rural workers, made the analysis of reason.
第三章研究我国民工子弟学校存在的问题，分析问题产生的根源。
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