In mathematics, it is a common variable.

在数学，它是一种常见的变数。

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An improved PCA is presented which USES principal-component-related variable residual (PVR) statistic and Common variable residual (CVR) statistic to replace SPE statistic.

该方法采用主元相关变量残差(PVR)和一般变量残差(CVR)统计量代替SPE统计量用于过程监测。

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Base pay and variable pay are the most common forms of direct compensation.

基本工资和可变工资是直接报酬的最普通形式。

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It's a common mistake to make if you forget that I've actually declared that variable up top, but wait a minute, I know any time that I use a variable, I have to declare it.

这是一个通常犯的错误，如果你忘了,之前在前面已经声明了这个变量，等等，我知道在任何时候,我使用一个变量，我必须声明它。

哈佛公开课 - 计算机科学课程节选

Initialization. A very common bug is to initialize a variable. Go through a loop, and then forget to reinitialize it when it needs to be reinitialized again.

忘记初始化,忘记初始化变量是一个很常见的错误,运行完一个循环之后,当需要再次初始化时。

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The capital that earns a variable return--the equity, the common stock--is taxed twice.

FORBES: How The Government Subsidizes Leveraged Takeovers

Five-speed automatics and six-speed manuals are common, and there's the new fuel-saving, infinitely variable transmission.

FORBES: Falling in love

Today its most common usage is in the workplace where it refers to such things as flexi-time, variable hours and extended periods of leave.

ECONOMIST: Idea: Flexibility | The