瓷套的应力、强度和各设计变量均可认为服从正态分布，在设计时作为正态分布变量处理。

The stress, strength and other design variables of porcelain sleeve can all be considered to obey normal distribution, and dealt as normally distributed variables during calculation.

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这些变量可能是不可避免的，但是它们是形成正态分布的原因之一。

These variable may be unavoidable, but they are a part of the source of a normal distribution.

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我们经常在金融学中假设随机变量，比如回报，是正态分布的。

We often assume in finance that random variables, such as returns, are normally distributed.

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We often assume in finance that random variables, such as returns,are normally distributed.

金融学中我们常假设随机变量,例如收益率,是服从正态分布的

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