离散

Matrix to determine whether it is reflexive and symmetric, Discrete Mathematics in the binary relation.

判断矩阵是否是自反的，对称的，离散数学中的二元关系。

At the same time, it introduced the form of a binomial distribution --- a number of promotional distribution, which is a typical form in the distributed multi-dimensional discrete random variables and it's widely used in engineering and technology.

同时介绍了二项分布的一种推广形式---多项分布，该分布是多维离散型随机变量中的典型形式，在工程技术中有广泛的应用。

According to the principle of profit maximization and based on a discrete demand function which can be represented as a negative binomial distribution,the optimal pricing model for the perishable products is established.

基于一种负二项分布的离散需求函数，并在利润最大化原则下，建立了时效商品最优定价模型。

Binomial distribution is preferred in testability demonstration,but it is discrete.Because of calculation difficulty,the sampling plan is usually worked out with some adaptations.

在测试性验证中首选的二项分布是离散取值的，由于计算困难，确定抽样方案通常采用一些变通的方法。

It was given by the Biot-Savart law that the magnetic fields of single magnetic dipole. For the case of multi-dipole, it can be gotten by vector computation from single dipole.

以一种比较方便的离散的形式描述比奥-沙伐定理（Biot-Savart law），给出磁偶极子周围任意一点的磁感应强度公式，并将其扩展到多个磁偶极子的形式。

By using the signal flow graphs of the integrators in Z domain, four kinds of SI integrator circuits are given. 4. The design method of SI biquadratic filters is proposed.

研究了四种离散时间积分器的特性，并与连续时间积分器的特性进行了比较，得到一些对开关电容和开关电流滤波器的设计有价值的结果。

Moreover, setting the chaotic acousto-optic bistable system as an example, we investigate the chaos synchronization of scattered system.

同时，以声光双稳态混沌系统为例，研究了离散系统的混沌同步。

Events,Operation and Relation of Sets, Classical Probability, Geometrical Probability , Statistical Stability of a Frequency, Axioms of Probability, Conditional Probability, Total Probability Theorem, Bayes' Rule,Independent Events,Independent Repeated Trials, One Dimensional Random Variables, Discrete Random Variables, Distribution Function of a Random Variables , Continuous Random Variables, Normal Distribution, Distribution of a Function of a Random Variable, Multidimensional Random Variables, Joint Distribution Function, Marginal Distribution Function,Discrete Two—Dimensional Random Variables,Continuous Two—Dimensional Random Variables, Independent Random Variables, Distribution of Functions of Random Variables,Expectation,Variance, Covariance, Coefficient of Correlation, Bivariate Normal Distribution, Law of Large Numbers, The Central Limit Theorems, Sample and Population ,Chi—Squared, T and F Distributions , Sampling Distributions , Point Estimation , Interval Estimation , Testing Hypotheses , A Test of Significance for Parameters in a Single Sample From a Normally Distributed Population , A Test of Significance for Parameters in Two Sample From Normally Distributed Populations .

本课程的主要内容：概率的概念与运算、随机变量及其分布、随机变量的数字特征与极限定理、数理统计的基本概念、估计和检验的基本方法，随机事件与概率随机事件、事件的关系与运算、几何概率、统计概率等，条件概率、全概率公式、贝叶斯公式、事件的独立性、二项概率公式，随机变量的概念、离散型随机变量、随机变量的分布函数、连续型随机变量、随机变量函数的分布，多维随机变量及其分布函数、边缘分布函数、随机变量的独立性、二维随机变量函数的分布，数学期望、方差、协方差和相关系数、大数定律、中心极限定理，总体与样本， X 2-分布、 t-分布和 F-分布，统计量及抽样分布，假设检验的基本概念、单个正态总体参数的显著性检验、两个正态总体参数的显著性检验。

The paper describes a method of harmonics measurement based on DFT,analyses characteristic of different window function and its influence on harmonics testing,and Blackman window is used to increase measurement precision.

详细地介绍了基于离散傅里叶变换的谐波测量方法，分析了不同窗函数的特征及其对谐波测量精度的影响，并依据军用电站谐波测量特点采用布莱克曼窗提高测量精度。

Susan Blackmore writes that melodies from Beethoven's symphonies are commonly used to illustrate the difficulty involved in delimiting memes as discrete units.

苏珊布莱克摩尔写道，旋律从贝多芬的交响乐常用来说明困难参与划定memes作为离散单位。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。