和向量

Defines a d imensionless initial height of a heat source to reflect the effect of a heat source on heat distribution regularity of an air conditioned room with upward displacement, using variance analysis method obtains the dimensionless relationship between the heat distribution resularlty and other factors as Arn, Zr,ZJ and DIHHS, and reveals their importance in desoendins ceder as Arn, Zr, DIHHS and Zj.

提出了用热射流起始无因次高度来反映热源起始高度对下送风空调房间热分布系数α的影响，利用回归原理得出了α随阿基米德数Ar_n、热射流自由度Zr、机械射流自由度Zj及热射流起始无固次高度变化的准则关系式。用连结向量图法和对实验数据回归公式的F检验，对影响室内热分布规律的各个因素进行了分析，发现这些因素均为主要影响因素，其影响的相对主次依次为Ar_n，Zr，和Zj，回归结果具有很强的显著性。

The dips deriving from transformer energizing can be distinguished via ST contour easily, and the dips caused by faults or motor inductions are classified using corrected first central moment and phase angle curve of amplitude envelope vectors from S-matrix.

利用S变换时频等值线图可以容易地识别由变压器激磁引起的电压凹陷；对于由各种故障和感应电机启动引起的凹陷，通过求取S矩阵幅值包络向量的修正一阶中心矩和相位变化曲线实现了分类。

It compares the vector space model andthe sentence space model in classifying the same document with the recall and the precision from different granularity, word granularity andsentence granularity.

比较了从词、句子两个不同粒度对文档进行表示的向量空间模型和句子空间模型在对同一问题进行分类时的召回率和准确率。

It is suitable for DOS and WINDOWS act circumstances,can complete the fundamental operation of integral,simple float,double float vector,matrix and dynamic cluster analysis programming with little information.

介绍一种用C＋＋面向对象编程语言开发的动态聚类分析类模板，它适用于DOS和WINDOWS运行环境，只需较少的信息和编程，便可完成整型、单精度实型、双精度实型的向量矩阵、动态聚类分析的基本运算。

The linear structural EV model studied in the paper can be written aswhere are the observations and measurement error of Xi and yi respectively ,and ij, Xi, ij are p-vectors .The paper presents the estimators of ,.Under some suitable conditions ,strong consistency is obtained .

对于一般线性结构型EV模型，即ξ_=X_i+δ_，η_=y_i+ε_=α+X_i′β+ε_，j=1，…n_i；i=1，…，k，…(0.2)其中ξ_(ij，η_，δ_，ε_分别是自变量X_i和因变量y_i的观测值和观测误差，ξ_，X_i，δ_是p维向量本文给出了参数β，α的估计，并在适当条件下，得到了估计的强相合性。

Methods The theories of topology, convex analysis and functional analysis are used to study and analyze some properties of the set-valued function in the problem.

依据拓扑，凸分析和泛函分析的理论，对于锥扰动向量优化问题中特定的集值映射进行分析和研究。

First, the paper introduces the moving coordinate system based on the curve tangent vector and the curvature component vectors. Next, the total curvature vector is composed and the osculating plane determined in the moving coordinate system. The curve bending is then calculated and the recursion analysis made on the osculating plane.

鉴于空间曲线上曲率采集面的变化，引入了由曲线切向量和曲率分量决定的运动坐标系，接着在运动坐标系中合成曲率矢量，确定密切平面，然后在密切平面中对曲线进行弯曲计算和运动坐标系的变换分析，并对相关公式进行了推导。

On the basis of the conclusion above, the nonlinear weak controllable vectors can be obtained, which compose the second class of weak controllable matrix, by means of matrix transfermations of the first class of weak controllable matrix. Furthmore the second criterion of weak controllability, accessibility and strong accessibility, which is more standard, more succinct and more practical, is obtained. On the basis of the first criterion and the second criterion, several important problems about nonlinear controllability are discussed, which include 1 local controllability; 2 three classes of local controllable decomposition, separately by means of local coordinate changes in the neighborhood of a nonsingular point, a point on a singular surface or a designated point x〓 with a designated input u〓; 3 the character of controllability of the ith state variable x〓 in different controllable areas and their boundaries.

在第一判别定理和第二判别定理的基础上，我们分析了非线性系统受控性质中的几个重要问题，所得到的结论包括i得到了非线性系统在可平衡点附近的能控性判别定理；ii分别给出了非线性系统在非奇异点、s阶奇面以及在状态空间内给定的一点x〓和输入u〓上的三种状态分解形式以及相应的求解方法；利用系统的Ⅰ型弱能控矩阵与Ⅱ型弱能控矩阵秩相等的条件，得到了只用系统的前n个弱能控向量来判断系统的弱能控性的判别定理；iii通过引入系统状态分量的三类受控区域边界的定义及相应的求解方法，初步探讨了非线性系统各个状态分量在不同的受控区域及其边界上的受控性质。

According to the total strength of the external and internal environment, we create the coordinates of vector strategic plan, and find out that the current strength of the company is a strength one, andtake the differentiation strategy using external chance and the international strategy of national concentration optimized from the strategy set as the current strategy.

根据外部环境和内部环境总强度，构建了战略向量坐标图，确定公司战略为发展型，并从经营战略集中优选出公司当前经营战略为利用外部机会质量差异化战略和国家集中化国际战略。

Traditional multivariable analysis method, for example, principal component analysis method and factor analysis method, are common in calculating the mean vector, the covariance matrix of sample and other variables.

摘要传统的多元统计分析方法，如主成分分析方法和因子分析方法等的共同点是计算样本的均值向量和协方差矩阵，并在这两者的基础上计算其他统计量。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。