查询词典 modified bessel function

Unstable Bessel optical resonator consisted of an axicon and a convex spherical mirror is studied.

研究了由圆锥透镜和凸面镜组成的非稳贝塞尔光学谐振腔。

In this report, by applying Fourier Bessel series, we study the solution of the fluid inertia wave motion equation in a rotating and precessing cylinder.

本文用Fourier Bessel级数表示出了充液不满的自旋进动圆筒内部流体运动方程的一个解。

First, the physical models associated with dislocations and cracks are respectively converted to mixed boundary value problems in mathematics. Secondly, by using the Fourier transform, a dual integral equation for a crack and an algebraic equation for a dislocation can be derived from the boundary conditions relating with a crack and a dislocation, respectively. Solving these equations, exact analytical solutions can be obtained in terms of Bessel functions in close-form.

先把位错和裂纹的物理模型写成与它们相关的边值问题，然后，利用Fourier变换将这些边值问题化成一个对偶积分方程(对位错而言，得到一个代数方程)，求解此对偶积分方程，可以获得以Bessel函数给出的封闭形式的分析解。

All the most commonly used special functions are included: Bessel functions, Fresnel integrals, etc.

所有最常用的特殊功能包括：贝塞尔函数，菲涅耳积分等

Furthermore, the problem of coupled piezothermoelastic response of a piezoelectric cylinder of crystal class 6mm is investigated. Analytical solutions for this problem are successfully obtained by using Bessel-Fourier series expansion and Laplace transform. These solutions are helpful for study of the influence of coupling on the distribution of stresses, displacements, electric potential and other quantities as well as the role of inertia term.

研究了热电材料圆柱的瞬态压电热弹性响应问题，应用Bessel-Fourier级数展开和拉氏变换方法成功地求得了该问题的解析解，此解有助于研究瞬态响应问题中耦合效应对应力、位移和电势等物理量分布的影响以及惯性项的作用等问题。

The general analytical expression of the deformed high-order Bessel beam and its propagation properties of in self-focusing lens self-imaging process in free space wer.

从产生高阶贝塞尔光束的典型光路着手，通过将高阶贝塞尔光束分解为高阶贝塞尔余弦光束和高阶贝塞尔正弦光束，利用柱坐标下的Collins公式，分析了变形高阶贝塞尔光束的解析表达式和在自聚焦透镜中的传播。

This is a computer graphics Bessel line drawing algorithm.

这是计算机图形学的一个bessel画线算法。

The analytical expression of a kind of integral including the product of the sums of two Bessel functions is given for the power calculation.

六、根据研究工作数值计算的需要，给出了一类包含有两个贝塞尔函数的和的积的积分公式。

One method is based on the expansion of zero order Bessel series, the other on the expansion of Lengendre series.

通过用测试函数进行测试和对实验数据进行变换都得到了较好的结果。

A mapping Bessel curve can be smooth curves, quite good, we can!

一个绘制贝塞尔曲线，可以将曲线平滑，还不错，可以看看！

Bob Eckert has been chairman and chief executive of Mattel for eight years.

美泰董事长兼首席执行官鲍勃·埃克尔特在任已8年。

The outlook for honors and disgraces carries on and surpasses the traditional outlook for honors and disgraces theoretically, and carries on and develops the theory of construction of socialist mora...

社会主义荣辱观的提出在理论上是对传统荣辱观的一次继承和超越，是对社会主义道德建设理论的继承和发展，在实践上有利于形成良好的社会风尚。