查询词典 sampling distribution

The distribution characteristics of primary neurons in skin referral area and gastric mucosa are that spinal ganglions present segmental distribution and superposing with each other,moreover,sympathetic ganglions present diffused distribution and have no segmental distribution,which may be the neural basis of treating visceral pain by intracutaneous- injection drug.

结论胃痛的皮肤牵涉区与胃黏膜初级神经元分布的特点是在脊神经节呈节段性分布且相互重叠，在交感神经节呈弥散性分布，无节段性分布，也相互重叠，这可能是皮内注药治疗内脏痛的神经基础。

Orientation Distribution Function reflects statistical distribution of crystals orientation in polycrystal in macrostructure. It breaks through limitation that the Pole-figure method, the inverse pole figure method which represent polycrystalline orientation distribution use one or two dimension graph and establish a three dimension space to describe the polycrystalline orientation distribution.

取向分布函数从宏观整体上反映了多晶体各晶粒取向的统计分布，它突破了传统的极图法、反极图法用一维或二维图形来描述晶体的空间取向分布的局限性，可实现晶体取向分布的三维空间描述。

Finally, the wind velocity data of Nantong observatory are used to verify the methods above-mentioned, and the likelihood ratio method and Kolmogorov statistic are used to test the fitness of the distribution, It is obtained that the distribution of yearly extreme wind velocity of the observatory is in keeping with Frechet distribution, and the experimental distribution form from samples basically coincides with the theoretical ones.

采用南通气象观测站的年最大风速资料进行实证研究，分别用似然比法和Kolmogorv统计量检验分布的拟合优度，得出南通气象观测站年最大风速符合Frechet分布，而由样本值构造的经验分布与理论分布曲线基本相吻合。

The second kinds of methods are that compared Laplace distribution with normal distribution to see Laplace distribution is more superior than normal distribution.

第二种方法是对Laplace分布和正态分布进行对比，看Laplace分布是否比正态分布更优越。

Empirical results show, improved Laplace distribution and asymmetric Laplace distribution are similar for estimating Leptokurtosis, while improved Laplace distribution is better for estimating skewness.In order to analyze the correlation between return distribution and volatility, the thesis uses ARCH-M Models to simulate the return series of China\'s Stock Market and developed markets ao as to discover the relation between investment return and time-varying risk.

在分布和波动相关性建模方面，本文利用ARCH-M族模型来模拟我国股市和成熟证券市场的收益序列，以揭示股票市场中投资收益与时变风险的关系，并对我国股市和成熟市场的风险补偿系数以及投资者风险承受能力进行比较研究。

And then studies on the relevant theories of distribution centers to let everyone know comprehensively, including the concept of logistics and distribution, the concept and development process of distribution center, the classification and function of distribution center, as well as its role. Lately it gives detailed description on the relevant theories of location selection, including the principle and influencing factors of location selection, as well as the steps and general methods of location selection. Finally the paper sums up several methods commonly used at present.

更多配送的概念、配送中心的概念及发展过程、配送中心的分类、功能及其作用；然后研究了配送中心选址的相关理论，包括配送中心的选址原则、影响因素、选址步骤以及配送中心选址的一般方法等部分；最后总结了目前几种常用的选址方法，并在这些理论的基础上，建立了非线性混合0-1规划类型的多配送中心选址模型。

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。

In the studies for Fe_3O_4 nano-particles, the Preisach distribution was the product of the interaction field and coercive filed distribution, and the interaction field distribution was logarithmic;the coercive filed distribution were Gaussian.

在对Fe_3O_4颗粒的研究中，矫顽场的分布采用对数分布，相互作用场的分布采用Gaussian分布形式，Preisach分布函数为二者的乘积。

Suppose is two-dimension random variable, call the probability distribution of measuremarginal distribution on for ; the probability distribution of measure Y marginal distribution on Y for .

Definition 3.6 设是二维随机变量，称分量的概率分布为关于的边缘分布；分量的概率分布为关于的边缘分布。

Suppose is two-dimension random variable, call the probability distribution of measure X marginal distribution on X for ; the probability distribution of measure Y marginal distribution on Y for .

Definition 设是二维随机变量，称分量的概率分布为关于的边缘分布；分量的概率分布为关于的边缘分布。

This method improved the results'integrality and objectivity compared with traditional methods.

其评价结果在完整性和客观性上都较以前的方法有了很大的提高。

Elate executive Igor Pirogoff was quoted in the Wall Street Journal (Oct. 2, 1992) as saying that his company could have transformed Hurricane Andrew "into a wimpy little squall".

elate长官伊戈尔pirogoff被引述在华尔街日报（ 1992年10月2日）的话说，他的公司可以转化的安德鲁飓风"变成wimpy小飑"。