查询词典 parabolic cusp

This mirror is out of the path of the light rays converging on the primary mirror and far enough off the wall of the tube to be away from tube currents, but in a position to reflect the convergent rays from the off-axis parabolic mirror.

这是出于镜面光射线道路的汇合的小镜子，远远不够的管过墙管应远离水流但能够反映收敛光线从离轴抛物面反射镜。

A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.

具有平行于一个坐标轴的抛物线部分且垂直于同一个轴的椭圆形部分的表面。

In this paper we define the concept of Projective Blaschke manifolds and extend the theory of equiaffine differential geometry to the projective Blaschke manifolds. We prved that if M be a complete projective Blaschke n-sphere and its universal covering manifold is isometric to a complete (n+1) dimensional parabolic, elliptic or hyperbolic affine hypersphere, then M is a quotient space of E^n, S^n or D^n by a isometric subgroup of its corresponding spaces.

在这篇文章中我们定义了射影Blaschke流形的概念，将等仿射微分几何的理论推广到了射影Blaschke流形，并证明：如果n维完备射影Blaschke 超球面 M 的通用覆盖流形分别是完备的抛物型、椭圆型或双曲型仿射球，则M分别是n维欧氏空间、n维超球面或n维单位圆盘关于各自空间的一个等距离散子群的商，从而对完备射影Blaschke 超球面进行了分类。

When aiming for a distant target, the crossbowman can estimate using the Wang Shan on how high he should elevate his crossbow. The crossbow bolts fired would thus follow a parabolic path and hit the enemies accurately.

当瞄准远处的目标时，射手参照望山估算弩抬高的角度，弩箭沿抛物线轨迹就可以准确命中敌人。

It is a generalization of the nonlinear diffusion equation proposed by Perona-Malik and the method presented by Cuesta, and interpolates between the nonlinear parabolic equation and the nonlinear hyperbolic equation, thus can effectively control the diffusion process so that noises can be removed and details of the image such as edges can be preserved as much as possible simultaneously.

提出了一种包含对时间的分数阶导数的非线性扩散方程，它是对Perona-Malik的非线性扩散方程和Cuesta提出的方程的推广，介于非线性抛物方程和非线性双曲方程之间，从而能有效地控制扩散过程，使得在去除图像噪声的同时能够尽可能地保留图像的边缘等细节信息。

The paper expounds the principle and advantages of disinfection by UV-C radiation, introduces the relative technologies and products at home and abroad, designs elliptic and parabolic cylindroid lampshade of bank paper disinfection apparatus with \! equal path surface \ principle.

论述了紫外C辐照杀菌消毒原理、优点，介绍了国内外有关技术和产品状况，并以"等光程面"原理设计了纸币紫外C消毒器光源的抛物柱面灯罩和椭圆柱面灯罩。

Possibly the whole of this is only a parabolic form for the story of Solomon's spiritual declension, and final repentance.

可能是整个这只是一个抛物线形式的故事所罗门的精神格，最后忏悔。

The existence and uniqueness of double degenerate parabolic equation are considered.

讨论双退化抛物型方程解的存在性和唯一性。

In this paper, we study the global existence and finite time blow up of the solutionfor a nonlinear degenerate parabolic equation with a non-local source.

本文研究了一类含非局部源的退化非线性抛物型方程的解的整体存在性和有限时刻爆破性质。

Chapter 2 studies a doubly degenerate parabolic equation subject to nonlinear inner source and boundary flux.

第二章考虑一类具有非线性内部源与非线性边界流的双重退化抛物型方程。

An original polarizing plate having a plurality of layers is fixed on a first principal surface of an ultrahigh molecular weight polyethylene porous sheet by drawing from the opposite side. The original polarizing plate is cut by a blade moving across the thickness of the original polarizing plate by using the porous sheet as a cutting mat to obtain a polarizing plate having a plurality of layers.

将由多层构成的偏光原板从超高分子量聚乙烯树脂多孔质薄板(1)的一主面吸引、固定在该主面的相反侧的主面上，以多孔质薄板(1)作为切割垫，将偏光原板(2)用在其厚度方向移动的刀刃(4)切断，得到由多层构成的偏光板(3)。

GIS technology can provide some spatial analysis tools for extracting some of these parameters such as the manning coefficient and calculating the average ground datum of internal point of every mesh unit and the mesh nodes.

模型参数指边界条件、初始条件、物理参数和模拟计算的控制参数。