logarithmic distribution

When the sediment concentration reaches 500-600kg / m3 in the Weihe River , the velocity distribution along the vertical still follows the logarithmic distribution .

渭河在含沙量高达500～600公斤/米~3的条件下，垂线流速分布服从对数分布规律。

The microcomponent can be distributed between the two phases by either homogeneous distribution law or logarithmic distribution law depending on different conditions of its coprecipitations .

依共沉淀的条件不同，微量组分分别按均匀分配律和对数分配律进行分配。

The egg mass of Tenodera aridifolia has an aggregate distribution in the mulberry garden and a normal logarithmic distribution on the mulberry .

桑园内南方刀螂卵块属聚集分布，在桑树上的分布高度属对数正态分布。

The temperature profile in the plunger-cylinder was in a logarithmic distribution , and the temperature outside of the plunger-cylinder decreased gradually from the boundary of the plunger-cylinder to the pipe wall .

柱塞内温度呈对数曲线变化，柱塞外侧温度与内侧温度不同，从柱塞边界到管壁，温度逐渐减小。

Estimation of Parameters for Logarithmic Normal Distribution with Three Parameters

三参数对数正态分布的参数估计

Calculation of annual maximum wind speed using logarithmic normal distribution

利用对数正态分布计算年最大风速

The Study of the Relation between R R Distribution and Logarithmic Normal Distribution

R-R分布与对数正态分布关系的研究

Asymptotic Property of Extremal Distribution and Moment of Standard Logarithmic Normal Distribution

标准对数正态分布的极大值分布和矩的渐近性质

The paper finds that the fatigue life of laser cladding submit the logarithmic normal distribution .

分析得出激光涂层零件在多冲载荷下疲劳寿命服从对数正态分布。

Under the wave of approximate normal distribution , the magnitude of electromagnetic field presents logarithmic normal distribution .

在近似正态分布的海浪作用下，水下场强幅值呈现出对数正态分布的规律。

The shadow affect is logarithmic normal distribution , and the multi-path fading is Rayleigh distribution .

阴影效应服从对数正态分布，而多径衰落服从瑞利分布。

If obeying logarithmic normal distribution , the reliable life of rolling bearings presents in an analytic form .

当载荷服从对数正态分布时，滚动轴承的可靠寿命具有解析式。

Pearson-x ~ 2 distance of the logarithmic normal distribution

对数正态分布的Pearson-x~2距离

From the statistical data we can found that the distribution of Chinese character numbers with regard to radical numbers fits the logarithmic normal distribution model .

统计编码数据发现，汉字依手写部件数的分布规律呈对数正态分布。

This paper points out that the electrochemical noise obey logarithmic normal distribution and inverse power law , and the electrochemical noise is caused by the systematic complex .

本文首次指出电化学噪声服从对数正态分布与反幂律，它的产生在于系统的复杂性。

The conclusion , through tests , was researched that monthly increased oil production of fracturing wells in oil fields are subjected to the logarithmic normal distribution .

通过分布函数的检验，油田压裂井月增油量服从对数正态分布。

The date analysis of different geology type uranium deposit in China indicates that the regularity of uranium grade is in logarithmic normal distribution in uranium mines .

数据分析表明，我国不同地质类型铀矿床开采铀矿井的地质品位呈对数正态分布。

As for failure prediction , the mathematic models , the logarithmic normal distribution model of network software faults and the exponential distribution model of network hardware faults , are established .

对于故障预测，建立了数学模型&网络软件故障率的对数正态分布模型和网络硬件故障率的指数分布模型。

Simulation results of gas tracing showed that residence time distribution of the gas from the inlet and out of the dipleg and exit tube assumed logarithmic normal distribution .

气体示踪模拟结果表明，由入口进入旋风分离器，由升气管、料腿排出的气体的停留时间近似呈对数正态分布；

In this paper , the asymptotic properties of the distribution and moment of maximum of in - dependent random variables sequence with standard logarithmic normal distribution as base distribution are discussed .

本文考察了底分布为标准对数正态分布时，独立同分布随机变量序列的极大值的分布和矩的渐近性质。

For low cycle fatigue life of steam turbine components with normal or a logarithmic normal distribution , a calculation method of the safe life expectation is given together with a practical example .

文中给出了低周疲劳寿命服从正态分布和对数正态分布时汽轮机部件低周疲劳安全寿命的计算方法和应用实例。

Conventional statistics of soil nutrients and pH value of 477 sampling sites showed the distribution of soil nutrient was not always normal . Available P and Ca had logarithmic normal distribution .

2通过对农场477个有效土壤采样点土壤有效养分以及pH值的常规统计，发现土壤养分属性并不完全呈正态分布，土壤有效磷和有效钙含量呈对数正态分布；

Using the method of probability statistics , the relationship between safety life and experiment life was theoretically obtained at small-number specimen experimental conditions when the fatigue life obeys logarithmic normal distribution .

利用概率统计的方法，得出了在小样本实验条件下，当疲劳寿命服从对数正态分布时安全寿命与中值实验寿命之间的关系。

A histogram of melt blown fiber diameters is shown by the logarithmic normal distribution , its molecular orientation increases with the de - crease of fiber diameter .

结果表明：熔喷纤维直径直方图呈对数正态分布，分子取向随纤维直径减小而增大。

Worthy mentioning , the present study suggests a formula to determine the particle velocity at the top of bedload layer on the basis of logarithmic velocity distribution in a current boundary layer .

同时，基于水流边界层对数流速分布规律，构建了计算推移层表层颗粒运动速度的公式并进行了充分验证。

After that , normal distribution 、 logarithmic normal distribution and extreme I distribution are fitted for physical and mechanical indexes . And Goodness-of-fit testing with X ~ 2 method is done subsequently .

然后用正态分布、对数正态分布和极值I型分布对各指标进行概率模型拟合并用x~2法对拟合优度进行了检验。

Because the logarithmic normal distribution probability density function can better describe the distribution of the ST coefficients . The logarithmic normal distribution model is used for fitting the likelihood ratio probability of the ST coefficients .

由于对数正态分布概率密度函数能够更好地描述ST系数的分布情况，所以采用对数正态分布模型拟合ST系数的似然比概率。

The mathematic model between reliability and remaining life associated to crack growth rate 、 initial flaw size and stress range that were independent random variables each other and obeyed logarithmic normal distribution , was constructed .

建立了裂纹扩展速率、初始裂纹尺寸和应力变化幅值互为独立随机变量，且服从对数正态分布的剩余寿命与可靠度之间数学模型。

By summarizing the distribution of average speed on different types of road and the statistical distribution rule , it is concluded that the distribution of average bus speed in Beijing follows the law of logarithmic normal distribution .

对北京市公共汽车平均车速的在不同类型道路上分布的情况和统计分布规律进行了总结，提出北京市公共汽车平均车速分布遵循对数正态概率分布规律。

This statistic analysis results indicate that the unnotched and notched strength of the brittle materials can follow both Weibull and Gauss distributions and besides , they can also follow logarithmic Gauss distribution .

统计分析结果表明，这两种材料的抗弯强度和缺口强度既服从Weibul分布也服从正态分布，同时也不排除这两种材料的抗弯强度和缺口强度还服从对数正态分布。