The study of two-dimensional planar arrays adaptive digital beam-forming system will be one of the focuses of digitization array antennas.
二维平面阵自适应数字波束形成系统的研究将是今后数字化阵列天线的热点之一。
In this paper, we study a new kind of evolutionary algorithm for global optimization over continuous Spaces, a revision of Differential evolution based on piecewise two-dimensional search.
本文研究了一种求解连续变量空间全局优化的进化算法，基于分片二维搜索的修正微分进化算法。
Two-and three-dimensional hydrodynamic computer codes have been applied to the study of the early phases of the collapse of a gas cloud.
二维和三维流体力学计算机程序，已用于研究气体云的早期坍缩。
Based on the saltation, creeping and stability models, a two-dimensional numerical model is established to study the development process of aeolian ripples.
通过简单的跃移模型、蠕移模型和稳定模型对风成沙纹的形成过程进行了二维数值模拟研究。
In order to study two-dimensional propagation of laser, we have also studied and used the two-dimensional laser propagation code, the HEATER.
为了研究激光二维传播，开发研究了二维激光传播程序HEATER，考虑介质对激光的吸收、衍射和折射效应。
Taking one-dimensional diffusing equation as the object of study, a method of undetermined coefficients was given. Then gave two examples and analyzed their stability and truncation error.
针对一维扩散方程，给出一种新型差分格式的待定系数法，并以两种新型差分格式为例进行稳定性和截断误差分析。
Theoretical analysis, numerical calculation and experimental study are tarried out for this kind of antenna, by use of the theory of two-dimensional periodic admittance surface.
本文对上述天线应用二维周期导纳表面理论进行了初步的理论分析、数值计算和实验研究。
A numerical study is carried out for the combined heat transfer of turbulent natural convection and surface radiation in an two-dimensional open square cavity with only one heated wall.
对具有单个加热壁的二维方形开口空腔内的湍流自然对流与表面辐射的耦合传热进行了数值研究。
An experimental Study of a two dimensional inlet model in non-uniform supersonic flow are presented.
介绍一种二元进气道模型在非均匀超音来流中的初步研究结果。
Objective to study the value of Two-dimensional Color Doppler Ultrasound and Three-dimensional Color Doppler Ultrasound in diagnosis of carotid artery illness.
目的：探讨二维彩色多普勒超声及彩色血管三维超声在颈动脉疾病的诊断价值。
In the form of practical examples, this paper introduces the study method of one dimensional array and two dimensional arrays.
文章以实例的形式介绍了一维数组和二维数组的学习方法。
In chapter two we analytically study the nonlinear lattice effects for the ground state of electron-phonon interaction one-dimensional molecular crystal system.
第二章用解析方法研究一维分子晶体电子-声子耦合系统基态中晶格非线性效应。
Objective To study the diagnostic value of two dimensional and color Doppler echocardiography for hyperthyroid heart disease.
目的探讨二维彩色多普勒超声心动图对甲状腺功能亢进性心脏病的诊断价值。
Through establishing DEM and three dimensional landform models of study areas, we discovered, two pilot areas have obvious difference in geographic and geomorphologic characteristic.
通过建立DEM和研究区域三维地貌模型发现，两试验区地形地貌特征差异较大。
At last, three-dimensional mathematical model of gas-particle two phase turbulence was established, and it was adopted to study the gas-particle two phase rectangular jet as well.
最后，在前面二维模拟的基础上，建立了三维气粒两相湍流流动数值模拟的数学模型，并用此模型对气粒两相气粒两相矩形射流进行数值研究。
We study the two-dimensional model of alkaline pulses by using the method of characteristics. The formulae of the nonlinear concentration waves are presented.
本文用特征线法研究了碱水二维渗流的对流模型，给出了碱水浓度非线性波传播公式。
A two-dimensional numerical wave flume is established to study the breaking standing wave action on a vertical-wall structure in the case of regular wave.
建立二维非线性数值波浪水槽，模拟了规则波条件下破碎立波对直墙建筑物的作用。
Therefore, through study of the animation movement axiom course, we can make adequate preparations for two-dimensional or three-dimensional animation and later animation synthesis.
因此通过动画运动规律的课程学习，可以为二、三维动画制作及动画后期合成作好充分的准备工作。
Methods: This study was undertaken to investigate the three-dimensional ct images of 17 patients with jaw fractions and to compare them with the two-dimensional ct images in assessing facial fracture.
方法：对17例颌骨骨折的三维ct影像及二维ct影像进行观察，分析其各自的特征并进行比较。
This article USES a finite difference time domain method to study the two-dimensional sound field characteristics of elastic solids based on elastic solid equations.
对弹性固体中的声场方程应用时域有限差分法，进行了二维声场特性研究。
A simulation experiment using the fracturing of two-dimensional brittle glass plates is designed to study the propagation process of fracture in a brittle medium.
设计了一个二维脆性玻璃板的破裂模拟实验，以研究脆性介质的破裂传播过程。
The method of the harmonic oscillator operator algebra has been used to study the two-dimensional polaron in a magnetic field.
谐振子算符的代数运算方法被用于研究磁场中同时与表面光学声子及表面声学声子相互作用的二维电子。
A two dimensional non-linear finite element scheme was used in the study of stress field on a deep section of a typical graben system.
本文用二维非线性有限元方法，计算了一个地堑剖面因地幔上涌引起的破裂危险。
The experimental study of the dynamic characteristics of flow past a two-dimensional circular cylinder is described.
本文给出了关于亚临界雷诺数二维圆柱绕流动态特性的实验结果。
The transition matrix method is extended to study the scattering problem of P, SV waves in half-space with two-dimensional local surface or subsurface irregularity.
本文将转换矩阵法加以推广，用来求解半空间表面局部不规则区域所引起的P、SV波的散射透射问题。
Plane wave expansion techniques and transfer matrix method are used to study the two-dimensional photonic crystal with a triangular lattice of dielectric cylinders in air.
提出了用正、负折射率介质层交替排列构成的一维光子晶体模型，并且用传输矩阵法计算了该模型的透射谱，从理论上分析了其带隙结构。
This thesis centers on the application of two-dimensional infrared and near-infrared correlation spectroscopy(2DCOS) on the study of several hydrophilic polymers.
本论文围绕二维相关光谱技术在多个亲水性聚合物研究中的应用而展开。
This thesis centers on the application of two-dimensional infrared and near-infrared correlation spectroscopy(2DCOS) on the study of several hydrophilic polymers.
本论文围绕二维相关光谱技术在多个亲水性聚合物研究中的应用而展开。
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