查询词典 geometric

The paper studies the application of spherical geometry to the field of 3D geometric constraint solution and presents a geometric constraint solution method,called spherical solution method .

研究了球面几何学在三维几何约束求解中的应用，提出了球面求解法。

The results shows that the probability distribution of discharge striking points is related to the breakdown voltage,breakdown time and the development of head-on discharge, it is influenced by geometric shape of object, ground resistance, and geometric striking distance.

结果表明，放电击中点的概率分布与上电极对各目的物的击穿电压、击穿时间和迎面放电的发展有关，受目的物几何形状、接地电阻和几何击距等因素的影响。

A planar geometric spline, biarc spline, is generalized to a 3D geometric spline whose curvature and torsion are all constant.

给出基于非线性规划解的双圆柱螺线样条局部构造法，把平面几何样条——双圆弧样条推广到常曲率和常挠率的空间几何样条。

By learning this course, students should proficiently use algebraic methods to solve geometric problems and practical problems, and proficiently grasp the basic ideas and methods of vector algebra and geometric properties of spatial line, plane and quadratic surface.

通过本课程的学习使学生熟练掌握运用代数方法解决几何问题并应用于实际问题之中，并熟练掌握向量代数的基本思想和方法，同时使学生熟练掌握空间的直线、平面和二次曲面及其各种几何性质。

In this thesis, several problems of time-dependent systems in various branches of physics are investigated by making use of the generalized invariant theory and the invariant-related unitary transformation formulation. The problems are given as follows:(1) Spin model and geometric phase factor in the fiber We investigate the fiber experiment performed by Chiao-Tomita and the Chiao-Wu theory concerning the geometric phase factor in the optical fiber, and then show that the investigation of the propagation of photons inside the noncoplanar optical fiber can be regarded as that of a second-quantization spin model.

本论文用推广的不变量理论和与不变量有关的幺正变换方法研究了一些物理分支中的几个含时系统问题：(1)自旋模型与光纤中光子几何相因子问题重新考察了Chiao-Tomita光纤实验和Chiao-Wu关于光纤中光子几何相因子的理论，证明了在非共面弯曲光纤中传播的光子运动问题实际上可以化为二次量子化含时自旋模型研究。

Then, according to research on nonisotropic transformation in geometric attack, this *** further spreads the application field of scale-space theory in watermark design and proposes an algorithm against geometric attack grounded on affine invariant feature point.

然后，通过对几何攻击中的非同向性变换的研讨，入一步扩铺尺度空间理论在水印设计中的应用，提出一种基于仿射不变特性点的抗几何攻击算法。

Geometric methods developed herein to obversely and inversely calculate the parameters of rational Bézier circular arcs with degrees of three and four are simple, practical and have direct geometric meaning.

所给算法具有几何直观性、简单、实用，符合计算机辅助几何设计的要求。

For the research of pointwise geometric property, in this thesis, we creatively introduced pointwise geometric constant.

为研究点态几何性质，本文首创引入点态几何常数。

Many geometric properties of spaces may be pointwise, pointwise geometric properties were the localization and meticulous of properties of spaces.

空间中许多几何性质可以点态化，点态几何性质是空间几何性质的局部化、精细化。

The main results are as follows:(1) In Chapter 2, the proof of the main theorem on quadratically related m-geometric sequences in [5] is simplified and consummated; A family of GMW-geometric sequences derived from GMW sequences are constructed, and their correlation functions and linear complexities are given.

本文也正是从扩频码序列的相关性能和安全性的角度来构造和研究了几类扩频码序列集合，得到以下的结论：（1）第二章首先简化并且完善了文献[5]中关于二次相关m-几何序列的主要定理；其次，在GMW序列的基础上构造了GMW-几何序列，计算了GMW-几何序列的相关函数；最后给出了GMW-几何序列的线性复杂度。

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。