• To study the change of particle size distribution, a general dynamic equation is established based on the moment method and the assumption of a reasonable log-normal size distribution.

    通过对颗粒分布作出一个合理对数正态分布假设,运用方法求解颗粒通用动力学方程,来研究颗粒的尺寸分布情况。

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  • 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通常认为股票价格模型服从布朗运动对数收益率是正态分布

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  • The test results show that the predicting fatigue life under variable amplitude loading follow the log normal distribution and agree well with simulation test results.

    结果表明变幅载荷疲劳寿命预测结果模拟结果服从对数正态分布两者符合很好

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  • In suppressive field, nematode trapping fungi indicated the feature of Log normal distribution.

    捕食线虫真菌土壤中的垂直分布土层加深而减少。

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  • The background value of cobalt in soil of Yunnan province was sampled and analyzed, the results show that the cobalt content in soil is log-normal distribution, the median is 16.

    云南省土壤元素背景进行采样分析,结果显示:云南土壤钴元素含量对数正态分布位值16。

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  • But Statistics result of actual market indicate most log-return of stock disobey normal distribution.

    然而实际市场数据的经验统计结果表明多数股票的对数收益率并不服从正分布。

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  • After reviewing briefly the history of the theory of maintainability, the authors defined the maintainability as well, and pointed out a method for calculating in terms of log-normal distribution.

    本文简略地回顾维修性理论历史以后,扼要地说明维修性定义指出维修特性对数正态分布的情况下维修度的计算方法

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  • The results show that the probability distribution characteristic of the vertical permeability coefficient in fissured rock zone is much close to the log-normal distribution.

    结果表明,同正态分布和均匀分布相比,裂隙岩体地区垂向渗透系数接近对数正态分布。

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  • There is a wide range of particle sizes which approximate the log normal distribution law.

    实验发现 ,颗粒粒度分布服从对数正态分布规律。

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  • There is a wide range of particle sizes which approximate the log normal distribution law.

    实验发现 ,颗粒粒度分布服从对数正态分布规律。

    youdao

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