How to check if 1 (or more) variables out of a set of variables is equal to a value?

如何检查1个(或更多)变量的一组变量等于价值？

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Whenever a procedure accepts a limited set of variables, consider using an enumeration.

当一个过程接受一个有限的变量集时，可考虑使用枚举。

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When writing a script, it is often easier to define a set of variables at the beginning of the script.

当编写脚本时，在脚本开头定义一组变量通常会更简便。

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You've got a magnetic field, maybe even magnetic susceptibility, the electric field. We're not going to worry about these magnetic fields or electric fields in this class So, pretty much we're going to focus on this set of variables here.

你也会引入磁场，或许甚至磁化率，以及电场，我们这堂课不需要关心,这些磁场或,电场之类的东西,基本上我们只关注,这里的一组变量。

麻省理工公开课 - 热力学与动力学课程节选

So this isn't the most useful form that we can have, but what we'll see shortly is that from this, we can then derive further criteria for essentially any set of variables or any set of external constraints, like constant temperature or pressure or volume and so forth that we might set.

所以这不是我们所能得到的最有用的形式，但是我们会很快看到，我们能够进一步推导出包含任意变量,或者任意约束的自发过程判断标准，比如说恒定的温度，压强,体积或者其他我们能够给出的约束。

麻省理工公开课 - 热力学与动力学课程节选

That's not just a set of functions--variables, as one might say in the lab.It's produced by genius.

它不仅仅只是一套机器，像人们在实验室所见的一样多变，它是由天才创作的。

耶鲁公开课 - 文学理论导论课程节选