查询词典 scattering

After comparing with the thermal conductivity under two different conditions, the thermal conductivity with vacancy is lower than that with Kr, which accounts for phonon scattering on impurities due to lattice strain is stronger than that due to differences in mass between the defect and the surrounding matrix.

模拟结果显示，温度在20~80K之间，考虑热膨胀时的导热系数比晶格常数固定时的值要低，但随温度变化的关系更加接近实验值时的情况；比较固体氩中不同掺杂时导热系数大小，发现同样掺杂浓度条件下，掺空穴时材料导热系数比掺氪时低，说明掺杂时由于晶格不匹配引起的声子散射比不同质量引起的散射更重要。

The electromagnetic scattering problem is often treated with integral equation and moment of method, and the calculation of matrix element is one of the most important factors that affecting the accuracy and efficiency of method of moment.

电磁散射问题的数值解通常采用积分方程结合矩量法求解，而阻抗矩阵元素的计算是影响矩量法计算精度和效率的重要因素之一。

During the T-matrix method of calculating light scattering by particle, incident and scattered fields are expand into spherical vector wave functions: which, via their relationship derived from the Maxwell equations, leads to the T-matrix, a transferring matrix between expansion coefficients of fields.

在粒子光散射计算的T矩阵方法中，将入射场和散射场用球矢量波函数展开，通过Maxwell方程推出二者之间的关系-零场方程，可获得散射场和入射场展开式系数之间的传输矩阵-T矩阵。

The inverse of this quantity, the mean free path of the electrons, thus decreases with increasing temperature, consistent with a decreased size of metallic regions or increased scattering events at higher temperatures.

这种数量上的反转，电子的平均自由程，也随着温度的升高而减小。这种结果是与高温下金属区域的减小或者说对电子散射几率的增加是一致的。

The presence of these rotation domains in the twin-crystalline ZnO thin film causes much more carrier scattering at the boundaries, leading to much lower mobility and smaller mean free path of the mobile carriers, as compared with those of the single crystalline one.

在孪晶薄膜中存在的这些相互旋转形成的区域界面上会引起载流子强烈的散射作用，导致载流子迁移率的下降和平均自由程的缩短。

Results show that when the scattering mean free path is close to the wavelength, the optical fields are localized obviously in the random media. And with the particle filling density increasing, the localization becomes stronger.

结果表明：当散射颗粒的散射平均自由程与波长相当时，随机介质中的光场分布呈现局域化的特征，而且随着颗粒填充密度增大，光场的局域化程度增强。

The multiple scattering which doesn＇t form loop can increase the mean free path, thus enhancing light amplification , and making laser in various directions.

不构成回路的多重光散射增加了激光在增益介质中的路程，使激光增强，并使激光沿各个方向发射。

There are two parts in this dissertation. In part one, the reaction scattering for the H〓 system is studied using three-dimensional quantum mechanical coupled channel distorted wave approximation.

本文分两部分：第一部分用三维量子力学耦合通道扭曲波方法研究了三氢系统的反应散射；第二部分提出了一种原子与双原子分子相互作用的。。。

It is proved that scattering field from a lossy coated conducting sphere is a meromorphic function on complex frequency plane.

对有耗涂敷导体球的散射场特性进行分析，证明散射场是复频率上的半纯函数。

We investigate the scattering properties of periodic arrays of nanoholes in thin gold films by using the method of discrete dipole approximation.

利用离散偶极近似的方法，对具有周期排列纳米孔金薄膜的散射光学性质进行了研究。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。