适应性公式返回的是介于0和1之间的一个浮点数。

The fitness formula should return a floating point number between 0 and 1.

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请记住，所谓“DNA”仅仅是适应性公式纯数学的一种解答。

Remember that the "DNA" is nothing more than a solution to a mathematical fitness formula.

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阐述管壳式换热器节能的重要性，介绍了热经济性公式和提高热效率的几种途径。

This paper describes importance of economy for shell heat exchanger, introduce heat thermal economy formula and several ways of improving thermal efficiency.

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And the functionality goes as the square of the difference in electronegativity.

这个公式的泛函性与电负性之差,的平方成比例。

麻省理工公开课 - 固态化学导论课程节选