logarithmic normal distribution
英 [ˌlɒgəˈrɪðmɪk ˈnɔːml ˌdɪstrɪˈbjuːʃn]
美 [ˌlɑgəˈrɪðmɪk ˈnɔːrml ˌdɪstrɪˈbjuːʃn]
对数正态分布
双语例句
- Abstract: this paper briefly introduces the method of testing the real sensitivity for EED and gives the data processing method in terms of the electrostatic critical ignition energy of conductive-powder EED conforming to logarithmic normal distribution.
文摘：简要介绍了电火工品真实静电感度的测试方法，以导电药式电火工品静电临界点火能量服从对数正态分布为基础，给出了对应的数据处理方法。 - Practical material shows that it mainly corresponds to normal distribution and logarithmic normal distribution. The reason is analysed why the magnetic susceptibility mainly tallies with norml distribution and the theory grounds which produce other distributions are also studied.
依据实际材料得出物性参数大多符合正态分布和对数正态分布，文中分析了磁化率多呈对数正态分布的原因，并研究了出现其他分布的理论依据。 - 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 - By means of EM algorithm, parameters for normal distribution, logarithmic normal distribution, rayleigh distribution and logistic distribution based on interval-type data are estimated so as to obtain the equation set that estimators satisfy.
使用EM算法，在区间型数据下，对正态分布、对数正态分布、Rayleigh分布和Logistic分布的参数进行估计，得到了估计量所满足的非线性方程组。 - 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。 - 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。 - 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。 - In this paper, logarithmic normal distribution is used to calculate annual maximum wind speed. Main differences of this method from others are that there is a more perfect subsample inspection and the upper limit of tolerance can be calcula-ted.
本文提出用对数正态分布计算年最大风速，这种方法与当前使用的计算方法主要的不同是，它具有较完善的子样检验方法，并且能计算最大风速的容忍上限。 - Estimation of Parameters for Logarithmic Normal Distribution with Three Parameters
三参数对数正态分布的参数估计 - 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 - 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。 - 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。 - Consequently, this paper deduces that the SIF of components under constant amplitude loading also follows logarithmic normal distribution and the distribution parameters can be obtained from the expectation and variance of fatigue crack length.
该模型研究了常幅载荷作用下材料瞬时裂纹长度和应力强度因子的分布形式，建立了应力强度因子与断裂韧性之间的干涉关系。 - 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。 - Based on an analysis of the experimental data it is here proposed that distribution of the electrostatic sensitivity follows a logarithmic normal distribution. It is further shown that the values calculated on the basis of the proposed model of distribution agree well with the experimental results.
文中在对静电感度实验数据分析研究的基础上，提出了静电感度分布遵从对数正态分布规律，根据这种分布模型求得的静电感度理论值与实验值很好符合。 - We select 16 strong earthquake records, and calculate their means and standard deviation values of logarithmic normal distribution, and convert them into means and standard deviation values of normal distribution with logarithmic normal distribution character of phase difference spectrum.
针对相位差谱具有对数正态分布的特点，选取西部67个强震记录计算了各自相位差谱对数正态分布的均值和标准差，再将其转为正态分布的均值和标准差。 - By using corn-mort meters and computer software, the impulse-widening by multipath effect is measured in metropolitan Beijing and its suburbs, The measurement result shows that the value of multipath time delay con-forms to logarithmic normal distribution.
利用通用仪表和软件相结合的方法，在北京市区和近郊区进行多径效应脉冲展宽的实际测量，结果表明多径时延值符合对数正态分布。 - The results of study indicate that kinetic energy factor, clear liquid height and viscosity are the major factors which influence the liquid dispersivity. The distribution of liquid droplet size can be described by upper limit logarithmic normal distribution function.
结果表明气相板孔动能因子、板上清液层高度和液体的物性是影响液体分散性能的重要因素，液滴粒度分布可以用上限对数正态分布函数来描述。 - 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。 - 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。 - In this paper, we discuss the Pearson-x2 distance and Pearson-x2 maximum distance of the logarithmic normal distribution. We proved that the logarithmic normal distribution and normal distribution have the same Pearson-x2 distance.
研究了对数正态分布的Pearson-x2距离与Pearson-x2最大距离，得到了对数正态分布与正态分布具有相同的Pearson-x2距离。 - 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。 - 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 - 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。 - 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 means of statistical inference as well as hypothesis test method, it is determined that the variables of compressive stress and shearing stress are of Extreme-value I Distribution and that the variables of frictional coefficient and cohesion coefficient are of Logarithmic Normal Distribution.
应用统计推理和假设检验方法分析得知，压应力与切应力随机变量呈极值Ⅰ型分布，摩擦系数与粘结力系数随机变量呈对数正态分布。 - 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； - A large number of emulation results shows that when the hydrodynamic parameters of the ship fluctuate, the kalman estimation precise submits to logarithmic normal distribution and the controlling effect of LQG designing submits to normal distribution.
通过大量的仿真结果表明，当水动力系数出现摄动时，船舶横向运动姿态及受扰kalman估计精度服从对数正态分布，LQG控制的控制效果服从正态分布。 - 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。