查询词典 scattering

Expanding a monochromatic electromagnetic beam into the sum over a seriesof plane waves using the spectral representation technique derives the generalforms of the scattering formulae of a monochromatic electromagnetic beamincident on wire grids. The general forms of the scattering power formulae of amonochromatic electromagnetic beam by wire grids are presented by usingPoynting theorem.

应用平面波谱技术将单色电磁波展开成连续平面波序列，由平面波入射金属栅网的散射公式推导了单色电磁波通过金属栅网的散射场一般公式，并应用坡印亭定理推导其散射功率的一般表达形式。

It is necessary to find the effects of spherical geometry on surface wave; Based on normal modal summation, the synthetic seismograms corresponding to the fundamental and few higher modes are calculated; Based on surface waveform scattering theory, the scattering surface wave are calculated for three dimensional laterally varying medium.

基于球地球模型计算面波波形，考虑到地球的圆球率，比平地球模型更接近实际；根据简正振型叠加原理计算出基阶和高阶直达面波；用面波散射理论计算出三维非均匀弹性地球模型的散射面波，包含振型转换，与实际更吻合。

With the theoretical model of spherical grain dynamics of sparse two-phase flow in single dimension, computing formulas of velocity′s attenuation and scattering distance were built for explosive residue grains in horizontal. Then, a simplified theoretical model on distribution of explosive residue was put forward on the basis of a spherical space with radius equalling to maximum horizontal scattering distance of explosive residue grains with certain diameter.

为了对残留物颗粒的飞散运动及分布规律进行理论分析，利用球形颗粒一维稀疏二相流动力学模型，研究得到炸药残留物颗粒的速度衰减及水平飞散距离计算公式；在此基础上，建立了以某粒径残留物颗粒水平运动极限距离为半径的炸药残留物颗粒球面空间分布简化理论模型。

In IPO-FDTD method, PO is used to calculate the scattering of the airfoil and FDTD is used to calculate the scattering of the suspender.

在该方法中，机翼的散射用PO求解，外挂物的散射用FDTD方法求解，通过通过多次迭代考虑两者之间的耦合效应。

According to the international standard ISO7027,we can know that the measurement of turbidity mainly use the optical turbidimeter measurement,it contains the scattering-light method and transmitted-light method. The scattering-light method has application in measurement for low turbidity water and also can used in high turbidity water.On the other hand,the transmitted-light method is more suitable for high turbidity measurement.

根据国际标准ISO7027可知，现今测量水的浊度主要以光学浊度仪测量法为主，主要包括散射光法和透射光法两种，散射光法主要用于测量低浊度水，但也可用于高浊度水的测量；而透射光法更适合于测量高浊度水。

On the other hand, with the purpose of fuzzy feature extraction and fuzzy classification device design, the undulatory property of maximum and minimum scattering power corresponding respectively to the maximum and minimum eigen-polarization has been investigated in frequency domain. Furthermore, the anisotropy polarization degree of target, which is determined by both maximum and minimum scattering power of target, has been studied; meanwhile, the dynamic changing characteristic of eigen-polarization on Poincare polarization sphere has been investigated by means of the conception of polarization frequency stability, the research result shows that PSD value has a big jump near π, forming a sharp pulse, and different target has their individual distribution property of PSD pulse.

另外，围绕目标模糊特征提取及模糊分类器的设计，研究了目标最大、最小本征极化所对应的目标最大、最小散射能量随观测频率的起伏特性，考察了由目标最大、最小散射能量共同决定的目标的各向异性极化程度；同时，采用极化频率稳定度的概念，研究了本征极化在Poincare极化球面上的动态变化特性，在最大、最小散射能量相等的频率点上，PSD曲线呈现为幅度接近π值的尖锐脉冲，反映了目标极化散射结构对这一频率跳变极为敏感，但不同目标的这种PSD曲线特征又有很大的不同。

Backward single and double scattering arecompletely polarized but the decorrelation between their phases produces unpolarizedcomponent in total scattering light.Enhanced backscatterig is unpolarized.

后向的单次散射和二次散射光基本上是完全偏振的，它们的相同偏振分量之间由于缺乏固定的位相关联，而在总散射光中产生了明显的非偏振成分，增强后向散射是非偏振的。

Furthermore,based on the expression of vectorial scattering of optical films,influence of interfaces roughness cross-correlated properties on light scattering was analyzed by total backscattering theory.

为了研究光学薄膜界面的互相关特性及光散射特性，介绍了光学薄膜的散射理论和模型。

Staring with the mathematic model of MoM, Introduce the processes of computing the PECs scattering with surface field integral equation and the inhomogenous dielectric bodies scattering with volume electronic field integral equation, then program to implement these processes as well.

从矩量法的数学模型出发介绍了用表面场积分方程计算PEC散射和用体电场积分方程计算非均匀介质体散射的实施过程，并编程实现之。

This article introduces the measuring and the calculation of forward and backward scattering in some range of surface roughness and waviness of laser gyro mirror substrate and presents the effect of surface roughness and waviness on scattering.

研究了激光陀螺反射镜基片表面粗糙度和波度前、后向散射的测量计算及其对散射的影响。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。