但有一个警告：启用优化意味着要增加编译时间——编译器尝试去做一些智能的事情，例如追随循环并分析出常量。

There is one caveat: turning on the optimization means that the build time increases. The compiler attempts to do clever things, such as following loops and pulling out constants.

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概述了热容量为常量的理想气体的卡诺循环效率。

This paper Outlines Carnot cycle efficiency of ideal gas whose heat capacity is a constant.

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