查询词典 gaussian plane

Theoretical and experimental investigation on the evolution of the atomic system with gaussian velocity distribution in a laser plane wave, in which the theoretical predications is in good agrement with the experimental results.

3在理论上和实验上系统地研究了高斯速度分布原子系统在激光行波场中的演化过程及其和激光光强、失谐、作用时间等物理参量的关系。理论和实验结果基本一致。

Differential scattering field of vertical incident Gaussian beam from a two-dimensional target near a plane interface is studied by means of a new hybrid method based on the reciprocity theorem, the image theory and the method of moment.

基于矩量法、互易性定理及镜像理论，提出了一种新的混合方法用于研究水平分界面上方二维介质目标对垂直入射高斯波束的差值散射场。

And then, in this part, following the idea of Topping [51, 52], we will show an isoperimetric inequality (6.3.1) on surfaces of non-positive Gaussian curvature by means of the curve shortening flow on surfaces, this inequality can be considered as a generalization of the Banchoff-Pohl inequality in the Euclidean plane.

然后，仿照Topping[51]和[52]利用平均曲率流证明等周不等式的想法，我们利用曲面上的曲线缩短流在Gauss曲率非正的曲面上证明了一个等周不等式(6.3.1)，它可以看成欧氏平面上Banchoff-Pohl [8]不等式在曲面上的推广。

The time-domain response of the induced currents on a scattering object irradiated by a plane wave with a Gaussian pulse in time is expanded as an associate Hermite series in this paper. Using the isomorphism of the associate Hermite function and its Fourier transform, the frequency-domain information can be obtained similarly to the time-domain expansion. According to the corresponding relation between time-domain analysis and frequency-domain analysis, and using the early-time response and the low-frequency information of the induced currents, the non-known coefficients in the expansion series can be decided. The entire responses of the induced currents on the scattering object in both time and frequency domains can be obtained at one time by simultaneous extrapolation computation using both the early-time response and the low-frequency information of the induced currents.

摘要首先根据散射体在高斯脉冲平面波激励下感应电流的能量几乎全部集中在时间轴和频率轴上的有限范围内，该文将时域响应展开为系数待定的连带Hermite级数的叠加，并根据连带Hermite函数的傅里叶变换的自反性，得到与时域响应形式类似的频域响应；然后利用时域方法和频域方法分别计算散射体上感应电流的早时响应和低频信息；最后经过时域和频域联合外推计算，由早时响应和低频信息确定时域和频域响应的待定系数，从而获得了整个时域和频域的完全响应。

When the ratio of signal Airy disk radius to local oscillator Gaussian 1/e field radius at focal plane is 1.71, maximum heterodyne efficiency of 81.45% can be obtained.

当焦平面上爱里斑半径与本振高斯光束光腰半径之比为1.71时，有最大外差效率81.45%。

Light scattering of plane wave/Gaussian beam from two adjacent objects .

两个相邻目标对平面波、高斯波束的光散射。

According the leakage test with different incident angles of the Sine and Gaussian pulse plane wave source, the numerical results show that SP-FDTD can achieve a perfect total-field/scattered-field separation, making leakage at below -340dB.

通过对不同入射角度的正弦平面波源及高斯脉冲波源的泄漏测试，结果表明SP-FDTD可以实现完美的总场/散射场分离，使得泄露降至-340dB的水平。

For a high laser intensity and small spot size, an electron may escape from the laser and can retain energy gain.We obtain analytical expresses of electron instantaneous momentum. Taking the plane wave of Gaussian laser for an example, we derive electron distribution function over instantaneous values of electron momentum and energy.

本文考虑电子初始温度不高(约100eV)以及脉冲长度很短(约4-6个激光波长)时，也能得到两群高能电子群；在脉冲长度极短(仅有2-3个激光波长)和电子初始温度不太高的情况下，就有明显的三群高能电子群出现，且如果激光功率密度大于5×10~(18)wcm~(-2)时，高能电子的温度也达到MeV。

Given a hyperbolic plane H2(-1)=,whose sectional curvature k is function K is the Gaussian curvature of the conformal metric g = e2ug ,then K satisfies the conformal Gauss curvature equation .

设H~2(-1)=是具常截面曲率k==1的双曲平面，其中B={∈R~2：x~2+y~2＜1}是单位圆盘，g=4(dx~2+dy~2)/(1-x~2-y~2)~2是所谓的Poincaré度量。考虑H~2(-1)上的共形形变度量？

This is a Gaussian-like projection transformation, from the longitude and latitude coordinates of the plane and the plane's longitude and lat...

这是一个高斯投影变换的类，支持从经纬度到平面坐标和平面坐标到经纬度的变换。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。