大圆

The main component of the celestial globe is a hollow bronze globe, with crisscross grids on the spherical surface, which are used to delineate the exact position of celestial bodies.

整个铜球可以绕一根金属轴转动，转动一周代表一个昼夜，球面与金属轴相交于两点：北天极和南天极。两个极点的指尖，固定在一个南北正立着的大圆环上，大圆环垂直地嵌入水平大圈的两个缺口内，下面四根雕有龙头的立柱支撑着水平大圈，托着整个天体仪。

Now make a smaller circle and put it in the center of the big circle.

接着再画一个稍小点的圆，把它放在大圆的中心，如下图所示

Curve C at the spot P(x0, y0) curvature is the maximal circle of the curve C tangency at the spot P(x0, y0). Contrail curve G of the center D of curvature circle entitles evolute of curve C.

曲线C在点Px0，y0）曲率圆是与该曲线C相切于点P(x0，y0的最大圆，曲率圆的圆心D的轨迹曲线G称为曲线C的渐屈线。

Stub Pitch is a number used to denote the radial distance from the pitch circle to the major circle of the external spline and from the pitch circle to the minor circleof the internal spline.

残余径节：残余径节是一个数，它用于表示节圆与外花键的大圆或内花键的小圆之间的半径差。

This paper discuss the character of jacquard knitting technics ,we analyse the relationships between knitting technics and embossment graph and give a math model.

本文讨论了针织纬编电脑提花大圆机编织工艺的特点，然后对编织工艺与图形学中的浮雕图形的特点进行分析，提出其完整的电脑提花大圆机编织工艺的浮雕算法数学模型，同时对模型中的几个关键参数进行了讨论，最后给出了该算法在花型系统中的应用成果。

It is found that the upper limit of the operational frequency bandwidth along the short great circle path which crosses the south-polar, region is approximately in accord with the calculated MUF and the other one along the long great circle path which crosses the north- polar region is different from the calculated MUF.

结果表明，经过南极区的短大圆路径的通信频段上限与计算的MUF基本相符；经过北极的长大圆路径的通信频段上限与计算的MUF有偏差。

Then, a Visual C++ program named Sailing Program is written to do following works: to calculate the parameters of rhumb line and great circle line ; to design the great circle line when it is necessary ; to design the composite line when it is necessary; to print tracks of rhumb line and great circle line on Mercator chart.

我们用Visual C++设计的航线设计程序，可以计算出两点之间大圆航线和等角航线的相关参数；如果有必要进行大圆航行的话，程序将计算出大圆航线的航路点；如果需要混合航行的话，程序将进行混合航线设计。

Ship always select rhumb line when the voyage is short while great circle line is the shortest route , so it is always used during the oceangoing voyage for the purpose of voiding the terrible environments in the high latitude sections , sometimes we have to turn to composite navigation line .

等角航线是最简单，短程航行中最常用的航行方式；而大圆航线是跨洋长距离航行时经常采用的，地理航程最短的航线；在大圆航行的过程中，有时为了避开高纬度地区的恶劣环境，我们还要选择混合航线。

This is all very interesting, and I daresay you see me already frothing at the mouth in a fit; but no, I am not; I am just winking happy thoughts into a little tiddle cup.

道具为大小两个圆片和一个小杯，目标是用大圆片压小圆片的边缘，使起弹起，落入小杯中。

Jinjiang Fuhong Light Industry Weave Co.Ltd. is a morden enterprise who is professionally engaged in the research and development , manufacture, sale and service of the big circular knitting machine for knitted fabrics and knitted fabrics.Moreover it is a powerful young working team who stresses prestige and explores bravely;It covers 18,000 square meters,and owns more than 200 set of imported advanced producing and testing equipments.The main parts, raw materials and the complete set of producing and testing equipment are introduced from Germany and Taiwan.Furthermore, with much high salary, employing the former chief engineer of Textile

晋江富鸿轻纺有限公司是一家专业从事针织大圆机和针织布料研发、制造、销售和服务的现代化企业，同时也是一个讲求信誉、勇于开拓的强有力的年轻工作团队；公司占地面积18000平方米，拥有先进的进口生产和检测设备二百余台套，产品主要部件、原材料和全套的生产、检测工艺均来自德国和台湾；同时巨薪聘请原中国纺织工业研究所的总工和台湾专家主导大圆机和新针织面料的研发和技术管理工作，从而保证了公司产品外观、质量、性能一直领先于竞争对手。

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。