查询词典 approximation methods in physics

To commemorate Einstein's "annus mirabilis," a coalition of physics groups has designated 2005 the World Year of Physics. The coalition's Web site lists more than 400 celebratory events, including conferences, museum exhibits, concerts, Webcasts, plays, poetry readings, a circus, a pie-eating contest and an Einstein look-alike competition.

为了纪念爱因斯坦&奇迹年&，世界物理学团体联合会指定2005年为世界物理年，联合会网站列出了400多项庆祝活动，其中包括会议、博物馆展示、音乐会、网络广播、戏剧、诗歌朗诵、马戏、吃馅饼大赛以及爱因斯坦模仿比赛。

Master Scholarships for the Master in Particle Physics at Université Blaise Pascal (1), Clermont-Ferrand, France The 2nd year of the Master of Physics at Clermont-Ferrand1 welcomes students from...

这一个礼拜我连周末都没得休息，总算忙过来了，任务的这最后一天倒显得轻松起来，大家边做着收尾的事边大侃特侃，讨论着这周末的大聚会。

It utilizes the knowledge of nuclear physics, photo-electricity, polymer physics, computer technology and mathematics synthetically, the polymer morphology in solid conveying can be visually obtained by the interaction of polymer atom or polymer chain and the photon beam caused by γ-ray, in which the photoemission, Compton effect and electron pair effect will be generated.

该方法综合运用核物理学、光电子学、高分子物理、计算机技术和数学知识，通过γ-射线的光子流与聚合物原子、聚合物链段相互作用所产生的光电效应、康普顿效应和电子对效应，来图像化地测量固体输送段的聚合物形态。

It is embodied in the three research programs of modern physics:(1) According to the program of geometrization of physics, the essence of the Curved Space in gravitational field needs to be explicated by Riemannian geometry, differential geometry, tensor analysis;(2)According to the program of quantum field theory, the generation and annihilation operator can represen...

它分别体现在现代物理学的三大研究纲领中：(1)根据物理学的几何化纲领，引力场弯曲空间的奥秘需要通过黎曼几何、微分几何与张量分析来解读；(2)根据量子场论纲领，场理论的&产生和湮灭&算符，能方便而精确地表征和重构相关的微观作用机制；&场的本体论&和&生成辩证法&同时得到体现。

In the early 20th century, the critical moment of classical physics of , Einstein was a glorious banner promoting the revolution in physics .

在20世纪初古典物理学出现危机的关键时刻，爱因斯坦是推动物理学革命思想的一面光辉旗帜。

Institute of nuclear physics and chemistry, China Academy of Engineering Physics, P.O.

中国工程物理研究院核物理与化学研究所，四川绵阳 621900

To solve the B-Ss pricing formulas,there are many popular methods now,such as partial differential equation,analytical approximation,binomial tree methods,finite difference method and Monte-Carlo simulation.

对于Black-Scholes期权定价模型，如今比较流行的定价方法有偏微分方程、解析近似方法、二叉树方法、有限差分方法和Monte-Carlo模拟等。

Methods Ionization chamber and film dosimetry methods were used to compare the angular dose distribution, point source approximation in the area close to the source,the coincidence of inverse square law of source strength and the scatter and attenuation in water medium,of a cylindrical, miniature 192 Ir source and "the ideal point source".

用电离室法与胶片法实测国产192Ir放射源空间剂量角分布、点源的近似性与源强反平方定律的符合性以及水介质散射与衰减特性，并与点源剂量分布特性比较。

In chapter 3 by using probabilistic methods and analysis methods we study pointwise approximation for bounded functions by Baskakov operators.

在这章中主要运用新的方法和概率论工具，结合分析技术，研究了Baskakov算子对一般有界函数的点态逼近问题。

There are few equivalent circuit modeling methods for UWB antennas. This thesis compares the characteristic of some existing modeling methods and presents a general and precise modeling method for UWB antennas. Firstly, establish the narrowband model of the antenna, and compute the difference between input admittances of the antenna and its narrowband model. Secondly, implement rational approximation of the difference to build the macromodel, and convert it into SPICE equivalent circuits. Lastly, combine the narrowband model and the macromodel to form the ultimate equivalent circuit model of the antenna.

本论文针对目前UWB天线等效电路建模方法比较少的现状，结合现有的天线建模方法的一些特点，研究了一种系统通用、模型精度高的新建模方法：首先建立超宽带天线的窄带模型，计算天线及其窄带模型导纳的差值；接着对差值进行有理多项式拟合，得到相应的宏模型，并转化为SPICE等效电路；最后合并窄带模型与宏模型电路，得到天线等效电路模型。

Tom: You are right, he worked hard all the time.

你是对的。他一直都是努力工作。

Take shortcomings,failures,and mockings of others as commonplace and a drive to complete oneself,hold your own opinion over the evalution and disscution divested from others,afterwards sink into the state of eliminate mistakes if any or encourge oneself being not being influenced by the sayinngs of others or having no ideas to do.

把缺点、失败及别人的耻笑等看成是一种常事，当成完善自己的动力，对别人的评价和议论自己心中有主见，做到&有则改之，无则加勉&，不为人言所左右或无所适从。