When we study stock market, we usually think that the model of stock price obeys Brownian movement, which log-return characterize normal distribution.
我们研究股票市场价格时，通常认为股票价格模型服从布朗运动，即对数收益率是正态分布的。
The number distribution of diameter grade obeys normal distribution.
雷竹株数按径阶分布服从正态分布。
It is shown that the ice thickness and the ice velocity satisfy with Lognormal distribution and Rayleigh distribution respectively, and that the ice compression strength obeys normal distribution.
结果表明：冰厚和冰速分别服从对数正态分布和瑞利分布，海冰压缩强度服从正态分布。
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