矩形波

A hollow light guide using the aluminum phosphor bronze reflector to transmit UV laser beams has been studied.

研究了一种由表面镀铝的磷青铜作为反射面的矩形型波导传输紫外光束的性能。

On the basis of multi-solid cavity filter's bandpass charaters analysing, constructed filter's evaluation function.

针对多固体腔窄带滤光片，根据其通带的矩形度与纹波特性提出了膜系设计的评价函数。

In this paper we explore multiresolution approximation to the solution of the boundary value problems in intervals and rectangular fields for the biharmonic equation using wavelet-Galerkin methods.

本文主要用小波－伽辽金方法研究了区间以及矩形域上双调和方程边值问题的解的多尺度逼近。

Secondly, we discuss the boundary value problem of two dimensional biharmonic equation in a rectangular field and its variational problem,discretize it by using dual tensor product of and the direct product and lining up of matrices, we get some special matrices which are the presupposition in exploring the fast computation, then solve the system of linear equations.

其次本文讨论了矩形域上二维双调和方程边值问题及其相应的变分问题，利用二元张量积小波分析和矩阵的直积、拉直技巧将变分问题离散化，从而使求解偏微分方程问题变为求解线性方程组的问题。一维情况两组基的张量积下得到的系数矩阵分别为块状七对角阵和稀疏矩阵。这些特殊结构为以后快速算法的研究打下一个基础。

An analytic method is used to analyze the transmission and reflection coefficients of a submerged rectangular breakwater in oblique waves.

采用解析方法研究了斜向入射波作用下淹没矩形防波堤的透反射系数特性。

Simple analytic formulas for odd and even mode capacitances per unit length and characteristic impedances for those two coupled structures were derived using conformal mapping method and partial capacitance technique.

采用保角变换和部分电容法，导出了耦合共面波导奇偶模单位长度电容及其特性阻抗的解析表达式。数值结果与利用其他方法分析椭圆耦合带线、三带线耦合共面波导和矩形屏蔽耦合共面波导的结果吻合得较好，表明本方法是可行

Firstly, image is decomposed into two serials, which are predicted and updated by two-order Neville filter on rectangle and quincunx grid by turns.

首先将图像分解为两个序列，用2阶Neville滤波器构造预测和更新算子，对两个序列以矩形栅格和梅花形栅格的格式进行交替预测和更新；再以各个波段的方差作为融合的特征，进行特征级第二代小波加权融合，最后对图像进行第二代小波重构。

By using plug flow and trajectory model s, the inclusion-removal efficiency to the processof purifying liquid metal contained in triangle/rectangular pipe by travelling magnetic field are analyzedtheoretically.

采用活塞流及轨线模型，对行波磁场净化液态金属时，三角形及矩形管中夹杂物的去除效率进行了理论分析，找出了提高夹杂物去除效率的途径；对两种形状管的夹杂物去除效率进行了比较；确定了行波磁场能有效去除夹杂物的粒径范

From the angle of a beam-forming, the cross- range focusing principle of the synthetic-aperture radar based on nonsinusoidal waves is studied. The expressions of antenna pattern for both rectangular signa l and Gaussian signal are presented. Compared with the conventional narrow bandw idth SAR whose cross-rang resolution is determined by the carrier frequency, th e cross-range resolution of the nonsinusoidal SAR is affected by the signal ban dwidth.

为研究非正弦波SAR的方位向分辨力，从波束形成的角度分析了非正弦波SAR的方位向聚焦原理，导出了基于矩形脉冲和高斯脉冲的合成孔径天线阵列方向图表达式，并与常规窄带SAR进行比较，指出影响非正弦波SAR方位向分辨力的主要因素为合成孔径长度和信号带宽，而与信号载频无关。

Considering the influence of fluid's viscosity and large amplitude sloshing, the 2-dimension coupling system composed of uncompressible viscous fluid and ideal elastic structure of rectangle aqueduct is studied by using ADINA to develop the models in this paper. Analyze the dynamic response of the rectangle aqueduct structure by large amplitude liquid sloshing. Under the horizontal harmonic excitations with different amplitudes, analyze the harmonic response of the rectangle aqueduct structure and fluid, include pressure on the tank wall ,free surface height and so on.

本文应用大型通用有限元软件ADINA探讨了计入流体的粘性、大幅晃动影响，不可压缩粘性流体与矩形渡槽弹性体的二维动力耦合问题，分析流体的大幅晃动对矩形渡槽结构所带来的动力影响问题；在水平谐波激励方式下，针对不同的激励振幅和激励频率，研究渡槽结构和水体的振动反应包括渡槽结构的倾覆力和倾覆力矩，水体自由液面角点的波高和水体底部角点的动水压力的反应分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。