球面

It is natural to use the spherical coordinates when we consider a problem in a ball. In this case.

当我们处理球内问题时，引入球面坐标是一种合理的选择。

With used Newton s image formula of spherical refraction and the optical spacing term, the formula about cardinal point and image of the thick lens is derived with simpler and more natural way.

利用折射球面成象的牛顿公式及光学间隔概念，更加简洁地得出了有关厚透镜成象的基点及物象公式。

However , the Earth is not exactly spherical but is closer in shape to an oblate ellipsoid , a shape which bulges around the equator.

但事实上，地球表面更接近于一个扁椭球面，在赤道周围更加突出。

Our globe, however, is not even a perfect oblate spheroid, because mass is distributed unevenly within the planet.

然而，我们的这个星球，也并不是一个完全的扁球面，因为在这个行星上，物质分布不均。

The algorithm automatically adjusts every image's inserting point by mapping multi-images onto a suitable sphere, to make accumulative average gray values of difference images on overlapped position be minimal, and then conversely maps the spherical image to plan image to finally get the stitched images.

该算法通过把多幅图像映射到一个合适的球面上，自动调整每幅图像的插入点，使得重合位置的差值图像灰度累积平均值最小，然后球面的图像反映射成平面形式，最终得到拼合图像。

Profile modeling ; Curve ; Curved surface ; Motion orbit ; Outside curve

因此，有必要对靠模曲线与曲面轮廓线之间关系做以探讨。以仿形车削回转球面为例，讨

The proper orthogonal decomposition method is introduced in this paper for this problem.

介绍了本征正交分解法在这一问题中的应用，并对基于球面及柱面壳体模型风洞试验得到的风压数据进行了比较验证。

As a kind of orthogonal polynomials system,orthogonal spline function has many good properties such as orthogonality and locality.

作为一种正交多项式函数系，正交样条函数结合球面调和函数所定义的矩具有正交性等优良性质。

With temperature increasing, granular outshoot prefer to grow along with vertical direction of surface of BN core, as well as the wrapped leaf-like shape form from granular ones. And the productions always kept complete morphology of sphere, which was due to the uniform growth of fluffy film on the BN core. Wrapped leaf-like structure of BN piece in fluffy film favored increasement of measured surface area and elimination of oxygen element.

凝并在球核表面的中间产物受到初始BN球核在空间上的诱导作用，随着温度的升高，突出物倾向沿着垂直于球面的方向向外生长，形貌由普通的粒状转变为卷叶状；绒膜的厚度均匀一致，产品得以保持规整的球状形貌，绒膜中卷叶状的BN结构利于氧杂元素的脱除，同时增加了比表面积。

First,using the drawing method to form the hemisphere-shaped workpiece and paraboloid shaped workpiece.

Marc对不锈钢带凸缘半球面形件和抛物面形件进行了数值模拟研究。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。