小圆

It is obviously that a planar point set has innumerable circumscribled circles. To get a minimum circumscribled circle, a mathematical model is built to transform the problem of getting a minimum circumscribled circle to the problem of optimizing function and to solve the function optimization with genetic algorithm.

为求得最小的包容圆，建立了求平面点列包容圆的数学模型，将求最小包容圆问题转化为函数优化问题，并用遗传算法解决了这个函数最优解的求解问题。

Finally it analyzes the feasibility that using hydromechanics to analyze traffic flow by contrasting various characters between traffic flow and fluid flow. It analyzes influence of road alignment to basic expressway segment capacity by hydromechanics, and obtains viscous resistance and viscous movement differential equation when the vehicle drives on circular curve segment of expressway. And it infers that viscous resistance is correlated with sideway force coefficient, slope of crown and radius of circular curve. Radius of circular curve, sideway force coefficient and slope of crown are bigger, viscous resistance is smaller, the influence to capacity is smaller when the vehicle is running on nearside lane of circular curve; but radius of circular curve and sideway force coefficient are bigger, slope of crown is smaller, viscous resistance is smaller, the influence to capacity is smaller when the vehicle is running on fast lane of circular curve.

最后通过对比交通流与流体流的相似性，运用流体力学分析了道路线形对快速路基本路段通行能力的影响，求出了车辆在曲线路段的粘性阻力，建立了车辆在曲线路段的粘性运动微分方程，并由此推知，粘性阻力与横向力系数、路拱横坡度和圆曲线半径都有关系，当车辆在圆曲线外侧车道上行驶时，圆曲线半径、横向力系数和路拱横坡度越大，粘性阻力就越小，对道路的通行能力影响就越小；而当车辆在圆曲线内侧车道上行驶时，圆曲线半径和横向力系数越大，路拱横坡度越小，粘性阻力就越小，对道路的通行能力影响就越小。

It showed the correctness of the criteria of roundness error and relationship between the minimum zone circle, minimum circumscribed circle and maximum inscribed circle and the effectiveness of the methods for evaluation of roundness error.

也验证了圆度误差判别准则及最小区域圆、最小外接圆和最大内接圆特征点间的相互关系的准确性和误差评定方法的有效性。

The criteria of the minimum zone circle method, minimum circumscribed circle method and maximum inscribed circle method were researched and the criterion of obtuse triangle was proposed.

研究了圆度误差评定中最小区域圆法、最小外接圆法和最大内接圆法的判别准则，提出了具有最小误差的外接圆和内接圆的钝角三角形准则，使圆度误差的判别准则得到完善。

Based on the criteria of roundness error, the definition of the circumscribed circle and inscribed circle with the least roundness error was given. The solution to the circumscribed circle and inscribed circle with the least roundness error was proposed when they met with the criterion of obtuse triangle.

根据圆度误差评定的判别准则，给出具有最小误差的外接圆和内接圆的定义，并提出了解决具有最小误差的外接圆和内接圆满足钝角三角形准则时的误差评定方法。

The relationship between the minimum zone circle, minimum circumscribed circle and maximum inscribed circle was studied. Based on their relationship, the minimum zone circle and minimum circumscribed circle, maximum inscribed circle were transformed mutually.

本文研究了最小区域圆与最小外接圆、最大内接圆特征点的相互关系，实现了最小区域圆与最小外接圆、最大内接圆的相互转化，可有效解决最小区域圆的误差评定。

Figure 3 the rink and the dot or reduce the map click here to view all news photo 3 1/4 tiles there are four 50% of the standard that is used to control exposure, proofing, Business card printing and membership card when the layout of the deep and superficial changes. 50% of the standard dot if the angle is large, targejia dot gain, on the other hand if a crane in the four corners, the dot.

图3 目测网不面增不小或放不小图不面击此处查察残部故事图片3）每1/4图块洋有4个50%的尺度不圆网不面，用于把持晒版、打样、制卡和会员卡制作时版面的深浅变冻。50%的尺度不圆网不面如果搭角不小，则网不面增不小，反之如四角脱开，则网不面放不小。

Xiaoming Han, a universally accepted first-class French horn master, is the chief French horn of German Saar Staat radio symphony orchestra, permanent French horn professor of Saar Staat Music Institute, visiting professor of the Central Conservatory of Music and Shanghai Conservatory of Music, visiting chief French horn player of Munich National Opera House, as well as those of Berlin, Cologne, Homburg, Bonn, Dusseldorf opera houses in Germany.

韩小明现任德国萨尔州广播交响乐团首席圆号，萨尔州音乐学院终身圆号教授，中央音乐学院和上海音乐学院客座教授，德国柏林、科隆、汉堡、波恩、杜塞尔多夫歌剧院及慕尼黑国家歌剧院的客座首席圆号。曾同小泽征尔、伯恩斯坦、索尔蒂、马塞尔等世界著名指挥家合作。

As exposed to optics microscope and inverted microscope,compared to control,SW480 cells with Giemsa staining that treated with the H2RA(cimetidine、nizatidine) took on malignance declining as crimpled firstly,cellular bulk and heteromorphism dimimished,the amount of rounded cell manifolded,nucleolus bulk lessened,dyeing thin,the amount of nucleolus decreased,partial cell organs manifest side-gathering phenomenon on chromatin,and the link between SW480 cell is loosened , subsequently partial rounded cell is floated.When the H2RA(cimetidine 40μM、nizatidine 20μM) against SW480 cells after 3 day,SW480 cells change roundly,nucleolus smashed,shrinking nucleolus came into being,and part of those not adhibited cell wall.

在光镜和倒置相差显微镜下，与对照组相比，经姬姆萨染色观察，西咪替丁、尼扎替丁处理的SW480细胞，先发生皱缩，体积变小，异形性减少，细胞变圆数目增多，细胞核变小，染色变淡，核仁数量减少，部分可见染色质边集现象；细胞间连接疏松，随后部分变圆细胞浮起。40μM西咪替丁及20μM尼扎替丁连续处理3天后，SW480细胞全部变圆，细胞核碎裂，固缩微核形成，部分不再贴壁。

The most popular during the Shang Dynasty was the "bird and beast" design,hu,(long-necked and small opening, deep-bellied with round base, some with overhanging handle),you (elliptic opening, deep-bellied with round base, has a lid and overhanging handle), lei (some round and some square, openings vary in size, short neck with square shoulders, deep bellied, with curling feet or round base, and has a lid), fou and the like are wine vessels, jue (deep-bellied, tri-pedestal, can be heated on top of fire, protruding grooves at the top for easy pouring), gu (the most common wine-drinking utensil, more often used in combination with jue, which is bigger, opening is shaped like a bugle, long neck, thin waist, tall curling feet), zh(similar to the zun in shape but smaller, some with lids), gong (oval belly, has an outer edge for flow of wine, short handles, bottom has curling feet, lid is in the shape of the head of a beast, some has an entire body like a wild animal, with small spoon as accessory), bei, zhen is to drink from.

尊（鼓腹、敞口、高颈，底有圈足，形制较多，商代以鸟兽形尊最为流行）、壶（长颈、敛口，有的有盖，深腹圆座，有的有提梁）、卣（椭圆口，深腹圆座，有盖和提梁）、罍（有圆形和方形，口大小不一，短颈方肩、深腹，圈足或圆底座，有盖）、缶等是盛酒的器具，爵（深腹、三足，可在火上加温，上端有伸出的沟槽以倒酒）、觚（最常用的饮酒器，多与爵相配使用，比爵小，口呈喇叭状，长颈、细腰、高圈足）、觯，觥（椭圆腹，有流酒的外沿和短提把，底为圈足，有兽头形盖，也有整体为兽形的，并附有小勺）、杯、盏是饮酒的器具。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。