缩并

To solve the problem encountered in finding a proper rotation matrix and translation vector, approximate and precise solutions are provided successively. The approximate one has the advantage of utilizing existing solution, with limited range of weight to choose from. The precise one has no limit to weight, and can also prevent the problem of obtaining a mirror matrix of the correct one. Besides, it permits the'hat'to be amplified to fit the size of'head'.

其中近似解可以直接套用现成的公式计算，但是权重的选择余地不大，而精确解则无此限制，而且从理论上解决了不同权重下求解旋转矩阵和平移向量时，可能出现错误的旋转矩阵的问题，并允许在配准时对"帽"进行缩放以适应"头"和"帽"的大小不匹配的问题。

In view of disadvantages in present defect reconstruction methods,such as over-long time or excessive need for training samples,a new defect reconstruction method based on similar model and genetic algorithm was investigated as follows:similar model between non-axisymetric defect and axisymetric defect was represented,and proportionality factor was deduced by skin depth equation.

针对以往缺陷重构方法中普遍存在的计算时间长或需要大量训练样本的缺点，提出一种基于相似模型和遗传算法的缺陷快速重构方法，分析非轴对称缺陷与轴对称缺陷之间存在的相似模型，并利用集肤深度公式推导出两者之间的缩比因子，从而将耗时巨大的缺陷重构问题转换为二维轴对称情况下的计算问题；同时为进一步缩短重构时间，提出一种加快遗传算法收敛速度的方法。

In the course of the condensation of 2, 4, 6-triamino quinazoline with substituted benaldehyde, the solvent DMF was replaced by absolute ethanol and the dried 3A clathrates was used as the dehydrating agent in order to improve the yield.

在2，4，6-三氨基喹唑啉与取代苯甲醛的缩合过程中，用无水乙醇代替DMF作溶剂，并用干燥过的分子筛吸收反应过程中生成的水，从而简化了后处理的步骤，并提高了产率。

CT has a great value in the observation of normal pericardium and pericardial disease. Pericardium ; Tomography, X-ray computed ; Radiometry

0例心包病变者，男 15例，女 5例，年龄 30～ 89岁，平均 5 5 。6岁，所有病例均由CT扫描作出诊断，并经心包穿刺细胞学和手术病理证实，其中心包积液 11例，缩窄性心包炎 6例，心包转

Through experiment, investigation in a large amount, find out the occur rence rule of maize rough dwarf vieus and explore"168"comprehensive prevention a nd control system.

通过大量试验、调查，摸清了玉米粗缩病的发病规律，并探索出了"一六八"综合防控体系。

Low temperature plasma equipment treated wool fabrics was used to study the properties of hydrophilicity, antistatic, easy soil release, pilling-proofing, shrinking-proofing, water and oil repellence.

用小型实验室和大型生产化低温等离子体设备对羊毛织物进行处理，并对羊毛织物的亲水性、抗静电性、易去污性、抗起毛起球性、防缩性、拒水拒油性进行了性能测试。

Finally, for the study of coking process on the alkylation catalyst, the deactived catalyst had been combusted by thermal analyzer and the method of dealing with data had been investigated to detect the correlation between the quantity retractation extent of coke on catalyst and reaction condition of alkylation.

最后，为了进一步研究烷基化催化剂结焦失活过程，用热重分析仪对失活催化剂进行烧焦实验，并进行有关数据处理方法研究，探索催化剂结焦量和焦炭缩合程度随烷基化反应条件的变化规律。

When Sinlaku hit Taiwan during September 12-15, 2008, the extremely torrential rain made Hou-Fong Bridge, located in downstream of Shi-Gang Dam, broken at around 6:50 p.m. on September 14, 2008. In this study, the case was applied to investigate the factors which resulted in the typhoon flood scour disaster and the disaster prevention mechanism, including the general scour of upstream and downstream river banks, the riverhead erosion and constriction scour, the free fall of broad-crested weir effect caused by water-pipe protection engineering, the disaster prevention and response of the bridge care and management unit, and the examination, timing and procedure of bridge block.

中文摘要本研究系以97年9月12日至15日强烈台风辛乐克侵袭台湾期间，所降下的超大豪雨造成位在大甲溪石冈坝下游后丰大桥於9月14日下午6点50分左右发生断桥事件为例，探讨台洪冲刷灾害成因与防灾应变机制，包含上下游河道之一般冲刷、河道向源侵蚀与束缩冲刷及位於桥梁上游约20公尺处之自来水干管保护工所产生宽顶堰跌水效应等影响，并检讨桥梁养护管理单位於断桥发生前防灾应变处置方式及台洪期间之巡查检测、封桥时机与封桥作业流程等等相关因应作为。

This paper has come up with the algorithms of real-time indication of the roamer's direction and position, and the realization methods of roamer skipping function and map zooming function.

针对在Virtools Dev 3.5平台下实现漫游地图的各种功能存在实现算法不完善等问题，给出漫游者前进方向实时显示、漫游者位置实时显示、漫游地图的缩放和跳转等功能的实现方法，并制作出3个自成体系的通用模块。

Combined with the condition of crack in concrete construction, the author analyzes the causes of cement stabilized sand gravel base course crack from dry shrinkage of mixture,temperature contraction,uneven settlement of roadbed and construction quality of base course,and introduces relevant preventive and control measures for it,which to ensure highway construction quality.

结合具体工程裂缝产生的状况，从混合料的干缩、温度收缩、路基不均匀沉降、基层施工质量四方面分析了水泥稳定砂砾基层裂缝的产生原因，并介绍了相应的裂缝预防控制措施，有利于公路建设质量。

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。