查询词典 gaussian plane

The diffraction distributions of Gaussian beam limited by the circular apertures with different sizes in scanning objectives focal plane were studied, and then the effective spot radius in focal plane was calculated using second moment and compared with the ideal one. The influence of apertures with different sizes on resolution was analyzed.

在不同孔径圆孔的限制下，对扫描物镜焦面上的衍射光场分布进行数值计算，并利用二阶矩统计的方法对焦面上的等效光斑半径进行数值计算，将其与不受限时的理想情况进行对比，分析孔径尺度对激光束扫描系统分辨率的影响。

The importance of Gauss theorem in electrostatics;the relation between electric flux and electric intensity; the notes of finding intensity of electric field by Gauss theorem ; the rules of choosing Gaussian plane and the relation between the intensity of electric field on Ganssian plane and space-charge.

高斯定理在静电学中的重要性，用高斯定理求电场强度注意的问题，取高斯面的原则及高斯面上的电场强度与空间电荷的关系。

Based on 90 control points in Jiangsu Province, this paper calculates the four parameters for the transformation form 1954 Beijing Plane coordinate system to WGS-84 Gaussian plane coordinate system in Lianyungang, Yancheng and Nantong, which solves the problem in coordinate unification.

本研究根据江苏省90个已知控制点，计算出江苏省沿海连云港、盐城和南通的1954年北京平面坐标系和WGS-84的高斯平面坐标系之间的转换4参数，解决了海域使用现状数据整合中坐标系统不统一的问题。

Transmission character during free space and transform of the Gaussian beam during transmiting C-Lens is analyzed. The numerical simulation intensity distribution of decentered Gaussion beam has been presented before and after coordinate transforming of Gaussian beam in focal plane of C-Lens.

本文首先分析了基模高斯光束的在自由空间中的传输特性，以及C-Lens对基模高斯光束的变换；给出了从光纤中出射的高斯光束经C-Lens变换后，出射光的光强分布以及对其进行坐标轴变换后的光强分布。

Chapter 2、When treat propagate problem of high power laser beams, ordinary assume beam to be ideal plane wave or Gaussian. Actually, beams is not ideal Gaussian or plane wave. The reason is that is phase aberraed and intensity nonuniform. In this chapter, we have developed a method on frequency conversion of aberrated beam. Based on statistical optics method and within the limits of thin crystal, we have studies on second harmonic generation of the phase aberrted beam. And the phase aberration is assumed to be a Gaussian random variable.

第二部分：在处理高功率光束传输问题中，通常假设光束为理想平面波或高斯型，而实际光束都不可能是理想的高斯光束或平面波，均会有一定的位相畸变及光强不均匀，本部分从统计光学的观点出发，在薄晶体近似下，建立了具有高斯型随机相位畸变光束倍频转换的一种统计描述方法，并对倍频转换光束的横向空间特性进行了分析。

For the plane wave of laser without pulse shape, we derive the express of electron trajectory by the relative Lorentz and energy equations. Note that the orbit of electron becomes a "fat-8" in the average rest frame. For the plane wave of Gaussian laser, we may know that, through relative Hamilton-Jacobi equation, electrons are accelerated in the front of pulse and decelerated backward. Whereas for the non-plane wave of Gaussian laser, we solve the Lorentz and energy equations by fourth order Runge-Kutta method.

对于无脉冲形状的激光平面波是从考虑了相对论效应的Lorentz方程和能量方程出发，得到了电子的运动轨迹方程表达式，在纵向平均速度参照系下该电子的轨迹呈现"8"字形；对于高斯型单色激光平面波是从相对论Hamilton-Jacobi方程出发，得到激光平面波在脉冲前沿加速电子而脉冲后沿减速电子，电子能量增益为零；而对于高斯型单色激光非平面波是从拉格朗日运动方程和能量方程出发，通过四阶Runge-Kutta法数值求解，得到电子在纵向有质动力、横向电场作用下加速电子，最后在强大的横向有质动力作用下从脉冲侧面散射出去，可以获得很大能量增益本文得到了相应的电子瞬时动量解析表达式。

By using Zernike polynomials to describe the wavefront distortion of beams, the propagation properties of the flattened Gaussian beams, super Gaussian beams, Gaussian beams and plane waves passing through an aberrated lens or an aberrated annular lens are studied based on the generalized Huygens-Fresnel diffraction integral.

以广义惠更斯—菲涅尔衍射理论为基础，采用Zernike多项式描述像差光束畸变波前相位，研究了平顶高斯光束、超高斯光束、高斯光束以及平面波通过像差透镜和环状像差透镜的传输。

A Gaussian beam is expanded intothe sum over a set of plane waves with the aid of the plane-wave spectrumtechnique.

文中应用电磁散射理论重点分析亚毫米高斯波通过金属栅网的散射特性，通过数值计算、仿真及实验测量分析金属栅网的近场散射特性。

The calculation formulae for the transmission coefficient of the plane wave incidence to Gaussian rough surface of the layered medium was derived in combination with the power spectrum of Gaussian rough surface.

采用高斯粗糙面来模拟实际的分层介质粗糙面，结合高斯粗糙面的功率谱导出了平面波入射高斯分层介质粗糙面的透射系数计算公式。

It was found that the output correlation peak value decreased with the decrease of the waist radius of Gaussian beam and the increase of the interval between target image on input plane and the center of Gaussian beam.

得到了输出相关峰值随高斯光束腰斑半径减小和输入平面上目标图像位置偏离高斯光束中心距离的增加而减小的结果。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。