查询词典 continuous approximation

Moreover, all analysis here is based on the first-order Distorted Wave Born Approximation theoretical model that has been quite successful in engineering application.

并且，这里所有的分析都是根据在工程应用中最成熟的一阶畸变波Born近似理论模型。

As all knows, Born approximation is a bottleneck to geophysical imaging.

在地球物理成像中，波恩近似是一个瓶颈。

In this work, a distorted-wave Born exchange approximation method within fully relativistic frame is presented.

本文给出了在全相对论框架下利用扭曲波波恩交换近似计算细致能级电离截面的方法。

The Born approximation assumes that the incident and the outgoing particle can be described by plane waves.

玻恩近似假定入射粒子和发射粒子都可以用平面波来描述。

These calculation results indicate that the Second-order Born approximation is available on researching the electron-atom scattering in a laser field.

计算结果表明，由二阶玻恩近似方法得出的结果与实验符合比较好，从而说明这种计算方法在研究激光场中电子—原子散射时是准确的。

ABSTRACT In the first Born approximation, the laser assisted ion-and positron-atom charge exchange collisions are studied.

本文在Born近似下，系统地研究了强激光场中裸离子与正电子对原子的电荷转移过程，在偶极近似下。

Firstly, some fundamental knowledge, such as the describing of laser field, the Kind of electron-atom scattering in a laser field, and so on, are introduced. Then a compution method which is called the Second-order Born approximation and is used to calculate the cross section of electron-atom scattering in a laser field, is provided.

本文首先介绍了激光场的描述、激光场中电子—原子散射的分类等相关理论，接着详细描述了一种计算激光场中电子—原子散射截面的方法——二阶玻恩近似理论。

Antihydrogen formation in the laser-assisted positronium- an tiproton collision is investigated in the first Born approximation.

在一级玻恩近似下，研究了在激光辅助的电子偶素反质子碰撞中的反氢合成。

But the singularity location inversed by Born approximation inversion is false except the first interface.

本文第二章对Born近似反演算法进行了深入研究和分析，指出了Born近似反演存在的问题。

The numerical result demonstrates the Born Approximation can be effectively used for 3D imaging for borehole-ground electrical method. It also demonstrates that the method can be used as the basis for fast 3D inversion in reservoir monitoring application and in water injection exploration.

数值计算的结果表明Born近似是一种有效的井地电法三维快速反演方法，同时也说明井地电法监测油水前驱和储层边界预测的观测数据可以用该方法进行快速三维反演成像。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。