查询词典 two pairs

Based on the depth research on extension array manifold of uniform circular, for some uniform circular arrays which had subarrays with the nature of rotational invariance and had the nature of central symmetry two ESPRIT algo-rithms were presented, the first algorithm reduced one time of SVD, the second algorithm avoided parameter pairs.

在深入研究均匀圆阵扩展阵列流形的基础上，针对某些均匀圆阵的扩展阵列中含有旋转不变性的子阵列组以及中心对称性质，提出了2种基于均匀圆阵的二维ESPRIT算法，第一种算法减少了一次奇异值分解，第二种算法避免了参数配对。

Any of various arthropods of the class Arachnida,such as spiders, scorpion s,mites,and ticks,characterized by four pairs of segmented legs and a body that is divided into two regions,the cephalothorax and the abdomen.

蜘蛛纲动物一种蜘蛛纲节肢动物们，如蜘蛛、蝎子、小虫及扁虱，特征是有四对分节的腿和分为两部分即头胸部及腹部的身体

Chromaticity is two-dimensional and specified by pairs of numbers such as dominant wavelength and purity.

色度是二维的和用象有势力的波长那样的对数目说明和纯洁。

Chapter 1 briefs the relation between invariance and computer vision and summarizes the research and application of invariance in computer vision. Chapter 2 first derives the transformations of three camera models, then makes the correpondences between the models and three typical geometrical transformation groups by analysing the transformations respectively. The correspondences supply the theoretical basis for applying geometrical invariants to resolve the problems of computer vision. In Chapter 3, we describe the geometrical invariant theory and prove some geometrical invariants of coplanar points, lines or conics by algebraic method. In order to use the invariants of conic pairs to describe general 2D shapes, we discuss the perspectively invariant representation of planar curves using conies in detail. A system consisted of two TMS320C25 and based on moment invariants is introduced in Chapter 5. The system can recognize more than 30 different shapes of object model or more than 10 plane models with similar shape in real time.

第一章简述了不变性与计算机视觉的关系，以及计算机视觉中的不变性研究和应用概况；第二章推导了计算机视觉中常用三种投影模型的变换关系，通过对这三种变换关系的分析，分别建立了这三种投影模型和几何学中的三种变换群之间的一一对应关系，为几何不变性在计算机视觉中的应用提供了理论基础；在第三章中，我们介绍了几何不变性的理论，并且用代数方法证明了共面点、直线、二次曲线的几何不变量和射影不变量；为了把二次曲线的不变量用于一般二维形状描述，在第四章中我们详细地讨论了用二次曲线实现一般平面曲线的透视不变性表示的方法；第五章介绍了用两片TMS320C25构成的、基于不变矩形特征的运动目标实时识别系统。

Covalent bond A chemical bond in which one or more pairs of electrons are shared between two atoms.

共价键：一般指两个原子接合时，通过形成共有电子对而产生的化学键。

Divide by two to get the number of pairs.

（第2、3、4 的总和）除以2 得到的数目。

Oxygen isotope temperatures of the eclogite mineral-pairs are cumulated at two peak values of 600 to 640℃ and 380 to 430℃, respectively, corresponding to retrograde reequilibration at greenschist-facie and high amphibolite-facies conditions; the peak eclogite-facies temperatures of 750 to 800℃ cannot be retrieved due to the strong retrograde alteration.

石马和黄镇榴辉岩的矿物对氧同位素温度均给出两个峰值： 380～430℃与绿片岩相变质条件一致，600～640℃与高角闪岩相变质条件一致；给不出峰变质温度(750～800℃)是由于岩石经历了退变质流体的强烈改造作用。

In order to ensure the accuracy of the match. Firstly the disparity gradient restriction across the direction of epipolar lines is used, and then on the basis of exclusionism searched the corner information close to edge point to guide the matching with restricted corners-searched range. The final match results ensure that the matching pairs in two images are one-to-one correspondences.

为了保证匹配的准确性，首先引入极线方向上的视差梯度约束，然后在考察唯一性的基础上，通过搜索并考察边缘端点周围的角点信息来引导边缘的匹配，并且限定边缘端点的角点搜索范围，最终匹配结果保证了两幅图像中的匹配对是一对一的唯一对应。

That means human locomotion, our gait, works in two's, in pairs.

这意味着人类的移动是两支脚成对的移动。

Several of the psalms are acrostic or alphabetic in their arrangement, the succession of the letters of the Hebrew alphabet occurring in various positions-the beginning of every verse, every hemistich, or every couplet; in the last-mentioned case the letters may occur in pairs, ie, in each couplet the two lines may begin with the same letter.

一些诗篇是acrostic或字母在他们的安排，继承信希伯来字母发生在不同的立场，开始每诗句，每hemistich ，或每对联；在最后提到的情况下，信中可能会发生对，即在每个对联两行可能首先同一封信。

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。