熵值

熵是热力学这一科学分支中的一个重要概念。不可逆性的思想是理解熵的核心。人们常说熵是系统的无序或随机性，或者我们对系统的信息缺乏的表达。熵是一个广延性质。它的量纲是能量除以温度，国际单位制中的单位是焦耳每开尔文（J/K）

Entropy is an important concept in the branch of science known as thermodynamics. The idea of "irreversibility" is central to the understanding of entropy. It is often said that entropy is an expression of the disorder, or randomness of a system, or of our lack of information about it. Entropy is an extensive property. It has the dimension of energy divided by temperature, which has a unit of joules per kelvin (J/K) in the International System of Units