常用

BACKGROUND: Glass ionomer cement has been a commonly used filling material in the clinic. However, glass ionomer easily absorbs water and dissolves in early concretionary phase, which can reduce the leak tightness of the edge of obturator, resulting in slightly leakage.

背景：玻璃离子水门汀目前已发展成为临床常用的充填材料，但玻璃离子在凝固的初期易吸水溶解的特性，会使充填体边缘密封性减低，产生微渗漏。

It is often applied to solve the conflict problems in the design of concurrent systems.

优先关系是并发系统控制的重要手段，常用于解决并发系统设计中的冲突问题。

Comparison was carried out to the conductance of copper graphite material made with traditional method.

为了改善金属石墨电刷的滑动磨损性能，在其中添加少量的铅、锡等低熔点金属是常用的方法[1] 。

The program will be made use of in due form in June this year. Take Neozoic CAS SMSV and old-style ENRICH for example, this program employs several commonly used digital TV confect system, which will avail the consummation of the whole middleware system of the company.

本项目用到了国内比较常用的几种数字电视配制系统，如：新生代的CAS SMSV，老牌的影立池，将有利于公司整个中间件系统的完善。

This article points out several approximately arithmetic about confidence probability and confidence interval of normal distribution for evaluation of uncertainty.

本文提出了不确定度分析中常用的正态分布置信概率、置信区间的几种近似算法。

In the areas of education and social psychology,the confirmatory factor analysis is frequently used.

实证性因素分析的运用越来越广泛，也已成为教育与社会心理领域中最常用的统计方法。

Confirmatory factor analysis is one of the statistical methods available to establish the construct validity of a measurement tool.

验证性因素分析乃为建立测量工具的建构效度的常用方法之一。

The related conglutination theory was described, and the feasible strategies to prevent pore intrusion were presented.

介绍了相关的黏合理论，列举了常用的防止孔渗发生的措施。

In this section, you will learn vocabulary to do with the New Year and about words that often occur in congratulatory phrases.

你将在有趣的戏剧里，学到过年常用词汇，以及常在吉祥话里的名词重叠语法。

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。

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。