If fluctuations magnified due to internal interactions exist in the system, entropy will decrease possibly.

如果在系统中由于内部相互作用存在涨落放大，则可能出现熵减。

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Finally, the physical implication of the microscopic entropy operator and the internal time operator are discussed.

最后讨论了微观熵算符与内在时间算符的物理含义。

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This paper makes research on internal mechanism of regenerator from the view of entropy. The quantitative relation between the loss and the entropy increase is first derived.

从熵的角度探索回热器的内部机制，首次给出了焓流损失与熵增之间的定量关系。

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