向量的

Vector mainly in plane geometry, Cartesian coordinate system, trigonometric functions, such as knowledge-based, learning through Vector, on the one hand, our mathematical expression of understanding entered a new field, on the other hand will enhance our space imagination capacity, the ability of thinking and analysis, the ability to solve practical problems.

向量主要以平面几何，直角坐标系，三角函数等知识为基础，通过向量的学习，一方面将我们对量的数学表达式的认识进入到一个新的领域，另一方面将增进我们的空间想象能力，思维能力和分析，解决实际问题的能力。

Introducing of product characteristic vector realizes the transformation from the descripti...

产品特征向量的引入，实现了对产品特征的自然语言描述向数学语言描述的转化；捆绑在组件上的约束和产品特征向量相关，使约束表达直观、集中，降低了知识表达的难度，并给出成功应用案例。

Through the definition of symmetric circulant matrix, the nature of the study, we discuss a class of n-order symmetric circulant matrix of eigenvalues and eigenvectors, and parity check on n different values are given for the matrix eigenvalue and the characteristics of vector formula.

通过对称循环矩阵的定义、性质的学习，我们讨论了一类n阶对称循环矩阵的特征值和特征向量，并分别就n取奇偶等不同数值时，给出了求该矩阵的特征值和特征向量的公式。

To obtain the likelihood function indicating the uncertainty of observed information, noisy data is firstly expressed by a set of data vectors instead of a single vector, and then transferred to probability density curve defined in model space through confidence value defined in data space.

我们将数据向量的概念扩展为数据向量的集合，通过引入数据空间内的信赖度，把数据噪声转移到模型空间的概率密度函数上，即获得了反映数据本身的不确定性的似然函数。

By the procedure, we first use the cosine values of the angle between view vector and normal vector on each vertex as the texture coordinates, through calculation of the dot product of the two vectors. The derivative of radial curvature on the model surface is used as the second pass texture mapping coordinates, by a calculation using Euler formula.

该方法首先通过模型顶点的视线向量和法线向量的点乘积计算其夹角的余弦值，作为第一步的纹理坐标进行映射；再通过欧拉公式计算径向曲率及其方向导数值，作为第二步映射的纹理坐标。

In chapter2 we obtain the constructure theorem and intechange theorem of 2-tournaments.wefind the correlation between the number of 3-cycles and 2-cycles in 2-tournament andits score vector,discuss a class of extreme value problem of tournament,answer partlya open problem posed by Brualdi.

第二章讨论了2-竞赛图和竞赛矩阵的一些基本问题：存在性和结构问题，证明了具有相同得分向量的任意两个2-竞赛矩阵可以通过三角形转换而互相得到，得到了2-竞赛图中2-圈与3-圈的数目与得分向量之间的关系式；讨论了2-竞赛中的一类极值问题，部分地回答了Brualdi〓的一个问题。

With the fact that there are some topology vector s that vary with different formula in each circuit topology, another identification way can be carried out by selecting and measuring the best.

另一方面，基于电路的拓扑向量在不同电路拓扑中变化规律各不相同的基本事实，通过对最简拓扑向量的选取、验算及监测，可依据较少的检测量而实现电力电子电路的拓扑辨识。

With the fact that there are some topology vectors that vary with different formula in each circuit topology, another identification way can be carried out by selecting and measuring the best topology vectors.

另一方面，基于电路的拓扑向量在不同电路拓扑中变化规律各不相同的基本事实，通过对最简拓扑向量的选取、验算及监测，可依据较少的检测量而实现电力电子电路的拓扑辨识。

The authors present a new algorithm in this paper. Firstly, a vector pointing from one polyhedron to the other is picked. Then the authors start to find an intersection plane of one polyhedron based on the scalar product of the norm vector of the plane and the picked vector.

就这一问题，给出了一种新的算法，其思想是取一个从一个凸多面体指向另一个多面体的向量，根据两个多面体中的面与这一向量的相对位置关系来寻找相交的平面。

In this new algorithm, 2-D X-ray images are collected for Ca, Si, Al, Fe, S, K, Mg, and grey-level value of the same point in these images are normalized and arranged as a vector in a particular order. In this paper, the vector is named as character vector, for it can be used to characterize each point in cement pastes 2-D image.

新算法采集水泥截面上Ca、Si、Al、Fe、S、K、Mg的二维X-射线图像，将这些图像同一点处的灰度值正规化并按一定的顺序排列后写成向量的形式，称为该点的特征向量。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。