The US governing establishment, the authorities and the powerful should not choose irreversible paths.

美国的建设，权力不应该选择不可挽回的方式。

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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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The research results have showed that the excavating process is a non-linear irreversible process tightly related with stress paths and stress history.

研究结果表明：隧道的开挖过程是和应力路径与应力历史密切相关的非线性不可逆过程。

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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。

麻省理工公开课 - 热力学与动力学课程节选