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1问题的提出摘录教材(“人教版”普通高中课程标准实验教科书《物理》选修3-3)中的两段文本片段分别如下所述.文本片段1.综合以上分析可以知道:一切自发过程总是沿着分子热运动的无序性增大的方向进行.这就是热力学第二定律的微观意义.文本片段2.在引入熵之后,关于自然过程的方向性就可以表述为:在任何自然过程中,一个孤立系统的总熵不会减小.这就是用熵的概念表示的热力学第二定律.为此,不少人也把热力学第二定律叫做熵增加原理.
1 questions The excerpt of the textbook ( “PEP ” ordinary high school curriculum standard experimental textbook “Physics” elective 3-3) in the two paragraphs of the text are as follows: Text fragment 1. The above analysis can know: everything The spontaneous process always follows the disorderly increase of molecular thermal motion, which is the micro-meaning of the second law of thermodynamics.Fragment 2. After the introduction of entropy, the directionality of the natural process can be expressed as In any natural process, the total entropy of an isolated system will not decrease.This is the second law of thermodynamics, which is represented by the concept of entropy, and many people also call the second law of thermodynamics the principle of entropy increase.