熱力學第一和第二定律,就定律本身来講,學生是沒有甚麽難懂的。可是,在講述第一定律之後,接着講的是幾種過程與循環、分子自由度和能量均分等等,進而得出第二定律的結論。中間這段教材,我以為就大一學生來講,是不大容易分别有系統地很好掌握的。他們不曉得為什么要講這一套。對於所謂可逆過 The first and second laws of thermodynamics, in terms of law itself, the students are not difficult to understand. However, after the first law is described, we next talk about several processes and cycles, molecular degrees of freedom and equal energy, and so on, leading to the conclusion of the second law. The middle of this textbook, I think the freshman is not easy to systematically well grasp. They do not know why to talk about this one. For the so-called reversible