It is pointed out that in many textbooks, the derivation of the theorem that the ratio of heat to temperature amounts to zero in any reversible cycle is insufficiently exact and too excessively brief.

关于任一可逆循环热温比之和为零的推导，许多教材上的阐述存在着不够准确和过于简单的问题，本文提出一种比较严格的推导方法。

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The experimental results showed that Mn doping in small quantity was effective to improve the cycle stability and reversible capacity of the material.

实验结果表明，少量锰的掺杂能有效地提高材料的循环稳定性和可逆容量。

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This means that the carnot cycle is an idealization since no real engine processes are reversible and all real physical processes involve some increase in entropy.

这就是说，卡诺循环是一个理想化的，因为没有真正的发动机过程是可逆的，所有真正的物理过程牵涉到一些熵的增加。

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Now, if we go back to our Carnot cycle which is a set of reversible paths, it's useful to compare this to what happens in an irreversible case.

如果回到卡诺循环,它是由一系列可逆过程组成，我们将它,和不可逆过程的情况相比较。

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