As it actually has fluctuation, the demand is treated as stochastic variable.
由于实际中需求具有波动性，将需求作为随机变量来处理。
So it is the important subject in probability to study the independence of stochastic variable.
因而，关于随机变量的独立性的研究构成了概率的重要课题。
The wind velocity is the sole important meteorological factor in the formula calculating wind energy, it is a stochastic variable.
风速是风能计算中十分重要的气象因子，它是一随机变量。
In order to disassembly parts from used products, usually many steps are needed, and disassembling time in each step is stochastic variable.
对废旧产品中的零件进行拆卸通常需要多个步骤才能完成，而每个步骤所需要的拆卸时间都是随机变化的。
This essay deduces that the demanded container number in one port in a year is a normal school stochastic variable by analyzing the data.
论文通过分析船公司在港口的月集装箱需求量得出其在港口的年集装箱需求量是一个符合正态分布的随机变量。
A discrete method for stochastic variable (features) space of class-conditional-probability density and estimation method for class-conditional -probability distribution is proposed.
本文提出了类条件概率密度随机变量（特征）空间离散化及类条件概率分布估计方法。
A discrete method for stochastic variable (features) space of class-conditional-probability density and estimation method for class-conditional -probability distribution is proposed.
本文提出了类条件概率密度随机变量（特征）空间离散化及类条件概率分布估计方法。
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