1·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。
2·In this paper, the internal energy and heat of the polytropic process, the adiabatic process and the isothermal processes of the varying mass system are discussed.
讨论了变质量系统的多方过程、绝热过程及等温过程的能量关系，并与常质量系统的多方过程、绝热过程及等温过程的性质进行了比较。
3·It has been proved that the process of coal and gas outbursts is not an adiabatic process accepted by most researchers but a polytropic process that is nearly an isotherm process.
研究结果表明，煤与瓦斯突出不是大多数学者认为的绝热过程，而是一个偏向于等温过程的多变过程。
4·A method of studying the characters was proposed by the piecewise process and the polytropic exponent based on ideal gas polytropic equation adapted generally at present.
针对目前普遍采用的理想气体多变方程，提出分段处理多变指数的研究方法。