对圆的

Above all this scenery of perfect human life, rose dome and bell-tower, burning with white alabaster and gold: beyond dome and bell-tower the slopes of mighty hills, hoary with olive; far in the north, above a purple sea of peaks of solemn Apennine(5), the clear, sharp- cloven Carrara mountains(6) sent up their steadfast flames of marble summit into amber sky; the great sea itself, scorching with expanse of light, stretching from their feet to the Gorgonian isles(7); and over all these, ever present, near or far--seen through the leaves of vine, or imaged with all its march of clouds in the Arno's stream,(8) or set with its depth of blue close against the golden hair and burning cheek of lady and knight,-- that untroubled and sacred sky, which was to all men, in those days of innocent faith, indeed the unquestioned abode of spirits, as the earth was of men; and which opened straight through its gates of cloud and veils of dew into the awfulness of the eternal world; a heaven in which every cloud that passed was literally the chariot of an angel and every ray of its Evening and Morning streamed from the throne of God.

在这一片人世间完美无缺的景色之上，高耸着发出白雪花石膏和黄金的辉煌光芒的圆拱屋顶和钟楼，在拱顶和钟楼的后面是雄伟的山脉，山上长满了灰色的油橄榄树，遥远的北方，在威严的亚平宁山脉紫色的群峰之上，轮廓分明的卡拉拉山把永恒不变的火焰似的大理石山顶插入琥珀色的天空，光芒夺目的浩瀚大海从山脚下一直延伸到戈尔高尼群岛，而在这一切之上，无论是透过葡萄叶丛所见到的，还是阿尔诺河上伴着飘忽的云影所反映出来的，还是同贵妇人和骑士的金色头发和红润面颊相映衬的，是一片蔚蓝的天空，无远弗届，无时不在，宁静而庄严。在那信仰单纯的年月里，对所有的人来说，那苍天无容置疑地是神仙的住所，就象地球是人的住所一样。穿过云端的大门，透过露珠的纱幕，一直通向令人敬畏的永恒世界--那就是天国，在那儿朵朵飘过的云彩实际上都是天使的战车，晨曦和晚霞的每缕光芒都来自上帝的宝座。

This article first antenna, microstrip theory, the circular polarization technology, the theoretical discussion, in this based on the microstrip antenna of circular polarization method - corner square microstrip antenna, and has done a design simulation , and then do the design and further research to improve and eventually get a resonant frequency (S11 reflection coefficient corresponding to the minimum frequency) for the 1.5GHz and 1.43GHz, the frequency of circular polarization for the 1.46GHz, S11 is less than -10dB relative bandwidth, the VSWR is less than 2 is about 8.8% relative bandwidth, axial ratio less than 3dB relative bandwidth of about 2.2% of the right circular polarization microstrip antenna design case, which proved very good the circular polarization microstrip antenna theory, also fully confirmed by a square corner design is a practical program, and select the appropriate regulation of sticks is indeed able to improve the performance of the antenna.

本文先对天线、微带理论、圆极化技术等进行了理论论述，在此基础上，提出圆极化微带天线的实现方法——切角方形微带天线，并对此做了设计仿真，后又对这一设计方案做了改进及进一步研究，最终得到一个谐振频率（反射系数S11 的最小值所对应的频率）为1.5GHz和1.43GHz，圆极化频率为1.46GHz，S11 小于-10dB 的相对带宽、驻波比小于2 的相对带宽约为8.8%，轴比小于3dB 的相对带宽约为2.2%的右旋圆极化微带天线的设计案例，从而很好的印证了圆极化微带天线理论，也充分证实了切角方形是一种切实可行的设计方案，而选取合适的调节枝则确能提高天线的性能。

The following are the expressionsfor the mean pressure set up at the detection plate and for the time of the signal toprogagate from the radiator to the detector:这里是1个公式,省略） where Re is the real part of the expression appearing within the braces, 0 is the density ofthe medium, vo is the amplitude of the vibrational velocity, c is the speed of sound in themedium, d2 = I +(r/zcos 8, z is the distance between the emitting and receiving plates, B is the angle between the axis of the acoustic channel andthe axis of the tube, r = vro/c, v is the flow speed of the fluid, d is thediameter of the pipe, m is the circular frequency, k is the wave number,where a is the radius of the plate (this is taken as the same for the emitting and receivingplates for simplicity, but there is no difficulty in discussing plates differ~mg in radii),,~ is the vibrational frequency of the emitting plate, andThe triple sums in the expressions for N~ and N2 may be neglected if the flow speed islow, since the contributions for these become negligible.

以下是表达式平均压力为定于检测板和为信号时间progagate从散热器到探测器：（这里是1个公式，省略）假如再是出现在大括号表达式的实部，0是密度中期，沃是速度的振动幅度，C是健全的速度中，D2中=我+的导向8，z是对之间的距离发射与接收板，B是声之间的通道轴角该管的轴，R =中心内大多分为/荤，v是流体的流动速度，，D是管道直径，m是圆频率，k是波数，的其中一盘是半径（这是为重点，同样的发射与接收为le简单板，但没有讨论板的困难，在半径不同毫克），，是发光板振动频率，和在N的表达式的三重总结和N2可以忽略，如果流速低，因为这些变得微不足道的贡献。

The first one is to generate the circle for each borderline segment of the component by considering the segment length and the prescribed tolerance value. If this is not the case, the borderline segment will be equally divided into halves until the obtained circle satisfies the tolerance value over the whole borderlines of the component. The basic idea of the last two algorithms aims at covering the domain occupied by the component as much as possible. The circle generation is carried out sequentially from salient angle to the sector formed by the salient angle till the uncovered borderline segments of the component. Particularly, the three-step algorithm with gap allows that the generated circles are distributed with gap along the component contour.

二分法利用组件各边长度和设置的容差大小得到该边的候选包络圆，若该圆不满足组件所有边的容差要求，则将该边不断地对分，直至所得到的包络圆满足各边的容差要求；三步划分法和带间隙的改进三步划分法则以组件区域为划分对象，依次对组件多边形凸顶角、凸扇形区和多边形各边剩余线段划分包络圆，且带间隙的改进三步划分法则允许包络圆在组件边界上以适当的间隙分布。

If in recent several years, I wants to return to the files immediately the opportunity at present, believed this time period Japan's performance really does not acclaim by, no longer is several year ago situation, saw rises slowly Japan economy 225 indices to 10000 spots, pours into one to investor's confidence to inspire the morale the strong heart needle, indeed Japan is the present Asian stock market has not been fallen most to the very deep area, will look like this wave Japan's tidal current also to start to enter the stock market to return warm, no longer will be the topicality which panic does not want to look, you will buy was the initial dollar valuation, therefore also could not feel that kind of double's profit satisfies, if initially purchased Japanese Yen valuation in other places, is also the extra profit, I only may say that in the world to has not favored looked the difference the investment, has a change slightly, will dump tray successfully.

如果是在最近几年的话，我想马上回档的机会就在眼前，相信这阵子日本的表现真的赞叹不以，不再是好几年前的情况，看到日经225指数缓缓上升到10000点，对投资人的信心注入一股提振士气的强心针，的确日本是目前亚洲股市当中最没有被跌到很深的地区，看来这波日本的潮流也会开始进入股市回温当中，不再是令人恐慌不想看的地区性，你买的是当初的美金计价，所以还感觉不出来那种加倍的获利满足，若是当初在其他地方购买到日圆计价的话，也算是额外的获利，我只可以说天底下没有绝对看好看差的投资，稍微有个变化，就会翻盘成功。

The naginata's length and weight made it an efficient weapon against the sword, and its circular execution made it one of the most graceful and fluid of classical Japanese combat systems.

薙刀的长度和重量对权力使它为一种有效率的武器，并且它的圆的实行做它古典日语的最优雅和流动的之一与系统作斗争。

Elaborated the punching components formation principle, the basic dies structure and the rate process and the principle of design; and designed some conventional punching die:the die for big diameter three direction pipe which solved the problom of traditional machining,the drawing and punching compound die with float punch-matrix,the drawing and cutting compound dies with unaltered press,the compound die for the back bowl of the noise keeper,the design of the compound die which could produce two workpieces in one punching,the bending die for the ring shape part ,the bending die which used the gemel ,automate loading die for cutting, the drawing,punching and burring compound dies with sliding automated loading,the punching die for the long pipe with two row of hole,the drawing die for the square box shape workpiece and the burring die for the box shape workpiece.

原文对于寒冲压技术的合种、特征及开展圆背做砬简单概述；阐述了冲压整机的构成本理、基础模具构造与活动进程及其设计本理；对典范的冲压件模具进佳的了设计：大曲径三通管冲压复合模设计掀世了大直径三通管的减工困难、带无沉动凸凸模的拉伸冲孔复合模设计、适力压边式落料拉伸切边复合模设计、长音器后挖碗落料、拉深、冲孔、翻边复合模设计、一模二件落料拉伸冲孔翻边复合模设计、环形弯曲件的模具设计、铰链舒方成形工艺及模具设计、半自动送料切角安装设计、涩板式送料拉深、冲孔、翻边模设计完成自动送料、长管少孔冲模设计、带凸缘台阶方盒形整件拉深模战盒形件正壁小孔翻孔模。

By means of the present model certain phenomena related to the nonlinear acoustic properties of an orifice, such as the roll-up of the shed vortex sheet and the forming of the Vena-Contracta are simulated. For a sinusoidal sound pressure, the time- history of the average velocity through the orifice is computed, and the nonlinear distortion of the velocity is examined by means of the Fourier decomposition.

依据此模型，对圆孔声学非线性效应的若干特征现象进行了数值模拟，如脱落涡层的卷曲，Vena收缩段的动态形成；在孔板前声压按余弦规律变化的情况下，计算了孔中平均速度的时间历程，并借助于Fourier分解分析了孔中平均速度的畸变情况。

In an oil well, the casing is a steel circular pipe, and it would confine and guide the electromagnetic wave propagating; and the electric properties of the fluid media would determine the propagation factor of the guided wave and affect the distribution state of the electromagnetic field.

油井内的套管是钢铁质圆管，对电磁波的传播将产生限制和引导作用；油井内流体介质的电性质将决定导波的传播常数，影响电磁场在井的轴向上和横向上的分布状态和波的传播特性。

Of the importance of the Square of 8 and 9 grid relationship, Schwaller says, These two lengths, 8 and 9, are related to musical harmony. This is the tone in music and also the ratio between the diameter of a disk and the side of a square of the same surface area. The sum of 8 and 9 is 17, the famous number of Jabir [the famous Arabic alchemist of the 8th century C.E.].

对8方图和9方图的重要关系，古埃及考古学家，金字塔研究专家史沃乐先生说：这两个长度，8和9，和音律和谐规律是相关联的，它们是音乐中的调和与增强，也是一个圆的直径和等面积直角方形的边长的比率。8和9的和等于17，它是一个著名的阿拉伯术士在公元8世纪所使用的一个著名的数字。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。