查询词典 approximation methods in physics

Geo physics Major branch of earth science that applies the principles and methods of physics to the study of the Earth.

地球物理学地球科学的主要分支，用物理学的方法和原理研究地球。

Methods of mathematical physics＂ is a course which introduces the mathematics applied in physics.

数学物理方法》虽然是数学课，但是它是介绍在物理中应用的数学。

Professor Chu's research in atomic physics, quantum electronics, polymer and biophysics includes tests of fundamental theories in physics, the development of methods to laser cool and trap atoms, atom interferometry, and the manipulation and study of polymers and biological systems at the single molecule level.

朱教授的研究原子物理学，量子电子学，聚合物和生物物理学，包括试验的基本理论，在物理，发展方法，以激光冷却和捕获原子，原子干涉和操纵和研究聚合物和生物系统的单分子水平。

Also, the essay has analyzed how to make good use of the piece of software to help make physics courseware, provided examples for thought, and covered all the unique advantages and great potentialities. At the same time, some teaching methods are suggested that physics teachers make the best use of the advantages and fight shy of the disadvantages.

文章通过分析几何画板在物理教学课件制作中的功能开发，以及对实践课例的分析和反思，全面评价了几何画板在辅助物理教学中的独特优势及发展潜力，并针对其功能上的不足，提出了运用几何画板辅助物理教学方法和建议。

Based on the literature analysis, and the living examples in chongqing No 48 junior middle school physics teaching, we discuss on the inquiry teachings basic idealities, guarantee conditions, principles of instruction, process of instruction and methods of instruction in junior middle school physics class, thus provide its implement with some guidances and references.

在文献分析的基础上，结合重庆48中物理课堂教学实例，深入系统地论述初中物理课堂探究教学的基本理念、保障条件、教学原则、教学过程和教学方法，从而为其实施提供了指导与参照。

The new method is a combination of characteristic approximation to handle the convection part, to ensure the high stability of the method in approximating the sharp fronts and reduce the numerical diffusion, a smaller time truncation is gained at the same time, and a mixed finite elementspatial approximation to deal with the diffusion part, the sealer unknown and the adjoint vector function are approximated optimally and simultaneously.

此方法即为对方程的对流项沿流体流动的方向即特征方向进行离散，从而保证格式在流动锋线前沿逼近的高稳定性，消除了数值弥散现象，并得到了较小的时间截断误差；另一方面，对方程的扩散项采用混合元离散，可同时高精度逼近未知函数及其伴随向量函数，理论分析表明，此方法是稳定的，具有最优的L~2逼近精度。

The characteristic approximation is used to handle the convection part along the direc-tion of fluid namely characteristic direction to ensure the high stability of the method in approximating the sharp fronts and reduce the numerical diffusion; The mixed finite element spatial approximation is employed to deal with diffusion part and approximate the scalar unknown and the adjoint vector function optimally and simultaneously; In order to preserve the integral conservation of the method, we introduce the modified characteristic method.

该方法对方程的对流部分沿流体流动的方向即特征方向离散以保证格式在流动的锋线前沿逼近的高稳定性，消除数值弥散现象；对方程的扩散部分采用最低次混合有限元方法离散、同时以高精度逼近未知函数及未知函数的梯度；为保证方法的整体守恒性，在格式中引入修正项。

Furthermore, the issues of the approximation of credibility function and the convergence of the approximation method are treated.

进一步，本文考虑可信性函数的逼近方法并证明该方法的收敛性。

The zonal translation networks on the unit sphere is constructed with the best approximation of spherical harmonic polynomials and the Riesz means. The Jackson theorem of approximation by such kind of zonal translation is established.

借助于球调和多项式的最佳逼近多项式和Riesz平均构造出了单位球面S上的带形平移网络，并建立了球面带形平移网络对LS(上标 q中函数一致逼近的Jackson型定理。

Wang-type fuzzy logic system and its functional approximation ability are researched deeply, A class of Gauss-type fuzzy logic system is presented and studied What it defers from Wang-type fuzzy logic system is its using Gauss fuzzifier The analytical expression of this fuzzy logic system is derived detailed Its universal approximation theorem for nonlinear functions is proved by StoneWeiestrass theorem.

通过对两类模糊系统作为非线性辨识器的仿真研究显示出高斯型模糊逻辑系统在抗数据干扰方面比Wang型模糊系统有优势。对非线性动态系统的辨识问题，借助递归神经网络的研究成果，提出一种基于递归网络结构的自适应模糊逻辑系统和参数学习算法。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。