【摘要】 从追溯热力学第二定律建立的历史过程中，剖析类比和理想化模型方法在指明提高热机效率的方向、揭示热现象的不可逆性、阐述火商函数的提出及其物理意义、导出热力学第二定律数学表达式等方面的重要作用．为改进热力学第二定律的教学提出了一种新的思路更多还原

【Abstract】 By going back to the process of the establishment of the Second Law of Thermodynamics,analysis the important affect of the analogy method and the ideal-model method in pointing out the direction of arraising the efficiency of the dynamic machines,the irreversibility of the dymanic process,the concept of Entropy and its physics meaning,the mathematics formula of the Second Law of Thermodynamics.Offering a new teaching method for the Second Law of Thermodynamics.更多还原