查询词典 bessel function of the second kind

Many types of optical transmission, and here I step on the weak-guided wave fiber wave equation to study and understand the step-index optical waveguide mode, are second-order differential equations Bessel equation.

光纤传输的种类很多，在这里我只对阶跃型弱导波光纤波动方程进行研究，了解阶跃折射率光纤的波导模式，得到二阶微分方程Bessel方程。

The squares of Bessel functions are plotted about O on the equator and on the first , second, third an fifth layer lines for half of the nucleotide mass at 20 A. diameter and remainder distributed along a radius, the mass at a given radius being proportional to the radius.

的平方贝塞尔函数绘制关于澳赤道和第一，第二，第三行的第五层的一半，在20个核苷酸大众答：直径和其余分布在半径，大众在某一半径正在比例到半径。

While calculating tensor Green's functions, the algorithm of secondary division is adopted to solve the singular problem. The Gaussian quadrature and continued fraction is adopted to calculate the integral with Bessel function. This method not only can ensure the right calculation of tensor Green's functions but also can get high precision.

求取张量格林函数积分时，采用二次剖分算法解决计算中奇异值问题，对于含有贝塞尔函数的积分项，利用结合连分式展开的高斯求积代替常规的快速汉克尔变换方法，确保了张量格林函数的正确计算并提高了计算精度。

Referring to Bessel function,a calculation equation of temperature distribution in the surface and heat-flow density of wax deposit layer in the laminar flow is deduced,as well as temperature distribution inside.

通过对试验环道上测试段相关数据的测试，对比分析测试段管壁有沉积物和无沉积物时测试段管壁内温度分布的不同表达式，根据能量方程建立了无量纲温度分布方程，利用贝赛尔函数推导出原油在层流状态下沉积层表面温度分布、沉积层热流密度、油流温度分布等相关温度场的计算公式，为研究蜡沉积规律，定性分析管路结蜡层厚度和制定合理的清管方案奠定了理论基础。

The calculating concrete example showed that the difference of results between perturbation method and Bessel function method are relatively.

实例计算证明，摄动法计算的结果与Bessel函数法计算的结果相差较小。

This dissertation has also developed an algorithm for computing Bessel function of high order, which improves the efficiency of the FMM greatly.

同时论文还提出了高阶Bessel函数一个快速算法，这个算法的提出大大提高了FMM的计算效率。论文分析了MEI方法和其它吸收边界条件的思想。

This model was solved by using the methods of separating-variables and Bessel function, and obtained the analytic solution of pressure distribution for one dimension and unsteady state.

并进而提出负压区的存在不仅与反吹的结构有关，而且和多孔介质本身的性质有关。

A straight line may be drawn approximately through the innermost maxima of each Bessel function and the origin.

一条直线可以得出大约通过内心极大每个Bessel函数和原产地。

For example, in the design of antenna, it is always involve the imaginaries Bessel function, so these work are belonged to the base research work, but it is important.

本文对各向异性介质偶极天线辐射场的数值计算的研究以及各向异性介质波参数的数值计算的研究目前还没有文献系统介绍，但这些内容对进一步研究探地雷达辐射场的规律是必不可少的，尤其是传播常数，它在探地雷达的研究中仍然是一个非常重要的公式，对其的深入研究有利于对探地雷达资料的正确解释。

This reactor has asymmetrical heat resource distribution. The Bessel function distribution is at radial direction.

此种堆型具有不均匀内热源的分布（径向为贝塞尔函数分布，轴向为余弦函数分布）。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。