查询词典 Sphere

The outside of the shell is a single sphere, but the inside is a set of intersecting spheres.

外面的壳是一个单一的领域，但里面是一套交叉领域。

Based on the summarizing of the exiting algorithms of the texture mapping and antialiasing, this paper goes deeply into the basic theory and processing of texture mapping. The texture compress algorithm which can satisfy the need of the memory and time is given for the stochastic sampling in the inverse texture mapping; the geometry transformation in the texture mapping are discussed and the concepts of the unitary parametrization and the patch parametrization is proposed, some kinds of the unitary parametrization methods of parametric surfaces and the geometry transformation in the patch parametrization are also presented; in order to solve the aliasing in the parametrization of intermediate surface-sphere in two-part texture mapping, an area-preserving transformation is presented also; to improve the quality of the graph the aliasing in the texture mapping is analyzed from the aspect of signal process, and the modified summed-area tables algorithms is proposed; the distortion of the scanline conversion algorithms under perspective transformation is analyzed and the proper interpolation algorithm is presented so the aliasing problem of the polyhedral object after the unitary parametrization is efficiently solved.

本文在总结现有的纹理映射和反走样算法的基础上，深入研究了纹理映射的基本原理与过程，根据反向纹理映射对纹理随机采样的特殊要求，提出了一种可满足存储空间和寻址时间的纹理压缩存储算法；通过对纹理映射中几何变换理论的进一步深入探讨，提出了整体参数化和面片参数化的概念，并给出了参数化曲面的各种整体参数化方法和面片参数化的几何变换形式；针对现有的两步映射算法所存在的中间曲面—球面的参数化问题，提出一种等积映射方法，较好地实现了由非参数化面片拼接而成的多面体表面的纹理映射；从信号采样的角度深入分析了纹理映射中走样产生的原因，提出了改进的区域求和表算法，使图形生成的效果有所提高；还分析了一般的扫描线算法在透视变换中所存在的问题，提出了一种正确的插值算法，从而解决了整体参数化后多面体表面纹理映射的几何变形问题。

Function graphing and analyzing: 2D, 2.5D functiongraphs and animations, extrema, root, tangent, limit,derivative, integral, inverse; sequence of number: arithmetic progression, geometric progression; analytic geometry: vector, line, circle, ellipse,hyperbola and parabola; solid geometry: spatial line, prism, pyramid, cylinder, cone, dado and sphere; Ability to save graph as data file or bmp file; Ability to save animation as AVI file; Ability to move, zoom in, zoom out and rotate the scene.

函数图表和分析：2D， 2.5D 函数图表和动画，极值，根，正切，极限，导数；序列号：等差数列，等比级数；解析几何：向量，矢量，直线，圆，椭圆，双曲线和抛物线；立体几何：空间线，棱柱，三角锥，圆柱，圆锥体，梯形台和球体；保存图形为数据文件或者图像文件的功能；保存动画为 AVI 文件的功能；移动，缩小，放大和旋转场景的功能。

The result for an aluminum sphere with gaussian pulse incident wave was compared to the theor y value obtained by inverse Fourier transform from the product of Rayleigh serie s with incident wave in the frequency domain, which shows a good agreement.

计算了高斯形脉冲入射下弹性铝球的无量纲反向散射声压，并和由频域的Rayleigh 简正级数解与入射波的频谱的乘积作反变换得到的精确解做了比较，两者趋势基本一致。

A man can achieve alpha-dom through pretty much any sphere - sports, business, politics, show business - and there will always be a critical mass of women who are drawn to him like iron filings to a magnet.

一个男人可以从方面获得兴趣－－体育，工作，政治，对自己事业的展望－与此也存在有很多能够象铁粉一样吸引磁铁的女人们。

It is linked with Sir Isaac Newton's theory that the world is not an exact sphere.

其次，它是见证人类文明发展过程的一项"科技遗产"。

Using RBF neural network substitutes BP network as the approximation of implicit performance function, and the response surface is formed in the sphere of hyper-pyramid at iteration step.

采用径向基函数神经网络，代替目前常用的BP网络，迭代过程中在超锥体的范围内构造响应面，逼近隐式的非线性功能函数。

In the 19th century Léon Walras and William Stanley Jevons both started their work with a view to importing the insights of physics into the economic sphere.

经济学家总是热衷于借鉴自然科学的基本原理。19世纪，莱昂·瓦尔拉(Léon Walras)和威廉·斯担利·杰文斯都开始着眼于将物理学的真知灼见引入经济学领域。20世纪初，伟大的新古典主义经济学家欧文·费雪甚至是在物理学家的指导下撰写的自己的博士论文。

Economists have always been keen to borrow principles from the hard sciences. In the 19th century Léon Walras and William Stanley Jevons both started their work with a view to importing the insights of physics into the economic sphere.

经济学家总是热衷于借鉴自然科学的基本原理。19世纪，莱昂·瓦尔拉(Léon Walras)和威廉·斯担利·杰文斯都开始着眼于将物理学的真知灼见引入经济学领域。20世纪初，伟大的新古典主义经济学家欧文·费雪甚至是在物理学家的指导下撰写的自己的博士论文。

"Part of the Cold War policy developed by John Foster Dulles to contain expansion of the Soviet sphere of influence, the doctrine continued pledges made under the Truman Doctrine."

杜勒斯所发展的冷战时期政策的一部分，以遏制苏联影响范围的扩大。实际上这是杜鲁门主义的延续。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。