Wind load is a random variable.
风荷载是一种随机荷载。
An estimator is a random variable.
估计量是一个随机变量。
The weighted mean of the random variable is the expected value.
随机变量的加权平均值是期望值。
The system is a two dimensional random variable vision system.
本系统是一个二维随动视景系统。
To understand this, let us define the following random variable:.
为了理解这一点，让我们定义以下随机变量：。
A select_card method picks a card at random and assigns it the @current_card instance variable.
select_card方法随机选取一张卡片，并将它赋给 @current_card实例变量。
Random walk: the path of a variable whose changes are impossible to predict.
随机行走：一种变量变动的路径是不可预期的。
Random walk: the path of a variable whose changes are impossible to predict.
随机行走：一种变量变动的路径是不可预期的。
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