查询词典 potential scattering

The conclusion can be obtained that the interior scattering sound field can be expressed as the superposition of the interior scattering sound field of the arbitrary-shaped closed thin shell and the external scattering sound fields of these scatterers.

研究结果表明，该内部散射声场可表示为封闭薄壳的内部散射声场和这些散射体的外部散射声场之和的形式。

The changes of the electron transverse momentum are the basic factors of electron and photon scattering, and their differential scattering sections are decreased with increasing of the quantity of photons which are active with an electron at the same time, and they are quickly decreased with the increasing of the inelastic scattering composition, but their change are slower than that in the situation dominated by laser field.

电子横向动量的变化是引起电子和光子散射的根本原因，其微分散射截面随与一个电子同时作用的光子数的增大而减小，随散射非弹性成分的增大而迅速减小，但比激光场中的情况来得慢一些。

Based on imaging technique, the shape measurement method and light scattering characteristics of static aerosol particles are investigated. The experimental apparatus is set up and the main effort is paid on the design of the scattering chamber and the optical fiber arrangement. The air-proof and the light-proof scattering chamber are designed for dynamic aerosol particles, and they are different from those for static aerosol particles. The control of airflow and the calibration procedure are also developed.

2针对静态气溶胶粒子，提出了基于成像法检测其形状与散射的方案，以散射腔为核心，确定了光纤插孔的排布，研制出"中正式"结构的实验装置；针对动态气溶胶粒子，设计了密封和光封的独特散射腔，实施了流量控制，制订了定标方案，初步完成了满足动态气溶胶粒形统计要求的实验装置。

A novel catalytic resonance light scattering method for the determination of traces of formaldehyde in blood plasma was developed. It was based on the fact that potassium bromate reacted with pyronine Y to form association nanoparticles which gave stronger resonance light scattering effect, and formaldehyde can catalyze potassium bromate oxidizing pyronine Y resulting in decreasing of the intensity of resonance light scattering in sulfuric acid.

在稀硫酸介质中，溴酸钾与吡啰红Y能聚集成较大粒径的纳米微粒而使共振光散射增强，而甲醛能催化溴酸钾氧化吡啰红Y而导致体系共振光散射减弱，据此建立了一种灵敏、简单、快速测定血浆中痕量甲醛的新方法。

The composite scattering between dielectric sea surface and a conducting plate above it is calculated by using Physical Optical method and reciprocity theorem. Meanwhile, the dependence of the plate size on the composite scattering field is considered. The Doppler spectrum and the chaotic characteristic for the time series of composite scattering field are analyzed. Finally, artificial neural networks and wavelet analysis are introduced into the study of the sea clutter to realize the purpose of target detection, the factors which affect the detection of the target are discussed and the solutions to these problems are given.

同时利用物理光学近似结合互异性原理计算了介质粗糙海面与其上方导体运动平板的复合散射，考虑了平板尺寸对复合散射场的影响，并对复合散射场时间序列进行了多普勒谱分析和混沌分析，最后将人工神经网络和小波分析引入到海杂波的分析当中，实现了海杂波中目标探测的功能并讨论了影响目标探测功能的因素以及解决这类问题的方法。

It is shown that the return time set of strong scattering is Poincaré set, the return time set of scattering is recurrent set and the return time set of weak scattering is recurrent set for group rotation.

特别地，我们得到了强扩散系统的回复时间集为Poincaré序列，扩散系统的回复时间集为回复序列以及弱扩散系统的回复时间集为相对于群旋转的回复序列。

A formula was proposed to explain the effects of secondary-scattering in the electron impact experiment, based on this formula, and the secondary-scattering coefficient as a function of the scattering angle was investigated.

在一定假设下利用公式解释了在电子碰撞实验中二次散射效应对实验测量的影响，并在此公式的基础上研究了对CO不同跃迁的二次散射系数随角度的变化关系。

The results show:(1) the probability at small scattering angle is larger than that at big scattering angle. With the increase of collision energy, the scattering probability and the tail effect slow down.

结果表明：(1)小角散射的概率大于大角散射的概率；碰撞能量越高，散射概率越小，尾部效应越弱。

From the simulation,the distribution of single and bulk scattering was obtained and it was found that the scattering distribution was focused in forward scattering at a small angle,and that the scattered laser might be absolute polarized light.

通过模拟得到单分系和多分系的散射分布特征，得出散射强度主要集中在前向小角度散射的结论，并讨论了散射光的偏振特性，得出散射光存在完全偏振光的结论。

The common capacitance sensor is composed of two-electrode planks which vary in shape and can be fixed in different plane of space. The driving and inductive electrode pole placed in the same plane of the uniplanar scattering-field capacitive sensor. The electric field presents scattering. As the shape of power line in the electric fields is like semicircular arc or ellipse, there is some limits in the measurement depth of uniplanar scattering-field capacitive sensor, and its penetration depth is equal to 2/3 of center distance of adjacent driving and irritable electrode pole.

电容传感器是由两极板组成，极板的形状有多种，两极板一般位于不同的空间平面；而同面散射场电容传感器的驱动电极和感应电极位于同一平面，其电场呈散射状，电场的电力线近似半圆弧形或椭圆形，因而其测量穿透深度是有一定限制的，是相邻驱动电极和感应电极中心距的2／3。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。