任意系统中局部微小体积内的熵改变由两部分组成：dS=deS+diS，deS称为熵流（entropy flux），它是由于系统与周围环境间的物质流和能量流而引起的熵变。视流的方向，其值可正可负。
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Through introduction of the negative entropy flow,we caused the system to form the ordered structure in the equilibrium state situation. Finally it would achieve the coordinated development between the traveling development and the environmental protection.
只有通过引进负的熵流,使系统形成远离平衡态情况下的有序结构,才能使旅游开发与环境保护协调发展。
参考来源 - 耗散结构理论在旅游环境管理中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
探讨了熵流产生的机理、应用与前景。
The discussion is particularly on the mechanism of entropy current, its application and prospect.
此时把空气流看作等熵流动，从而得出数学模型。
The air flux was then thought equal entropy flux, therefore the mathematical model was obtained.
证明了激波是一种负熵流波，是依靠激波波速输运热流的热波。
It is demonstrated that negative entropy flow exists in shock wave and shock wave is a kind of heat wave which transfers heat with traveling wave velocity.
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