ladder approximation

Analysis of stepped approximation for a novel truncated circular wave guide by using straight-line method;新型截断圆形波导的阶梯近似直线法分析WCu汉语字典

In this paper we study the problem of solving approximate points by using the proximal bundle method based on approximate subgradients.利用建立在近似次梯度基础上的近似Bundle算法研究了迫近点的求解问题,并给出了一类算法及算法的收敛性定理。WCu汉语字典

To shorten the matching time, the four level fractal approximation coding based on matching in neighborhood is presented.为了缩短分形编码中值域块与定义域块池中的定义域块逐一匹配时间，提出了四级邻域匹配分形近似编码。WCu汉语字典

A new method for the fractal approximation of an image block is presented.提出了一种新的图像块的分形近似方法，该方法借助于像素点的邻近点以达到对图像块的最小均方分形近似。WCu汉语字典

Density functional theory (DFT) based on generalized gradient approximation (GGA) and local density approximation (LDA) was used to calculate the energy gap of a set of zigzag single-walled carbonnanotubes (SWCNT) with different diameters.采用基于广义梯度近似(GGA)和局域密度近似(LDA)的密度泛函方法(DFT)对不同直径的一组锯齿型碳纳米管进行了能隙计算,将得到的结果相互对比并与实验数据进行对比,得到了一组单壁锯齿型碳纳米管的能带特征,发现其能隙值在0～1。WCu汉语字典

First-principles calculations within the generalized gradient approximation(GGA) are carried out on the energy gaps of both isolated zigzag SWNTs(7,0),(8,0),(9,0),(12,0) and their corresponding bundles in this paper.本文采用基于广义梯度近似(GGA)的第一性原理方法,对锯齿型单壁碳纳米管束(7,0)、(8,0)、(9,0)、(12,0)及其相应的孤立管的能带结构和能隙进行理论计算。WCu汉语字典

The system energies and surface structures are comparatively calculated by generalized gradient approximation(GGA) and local density approximation(LDA),based on density functional theory(DFT) in k-point space with periodic boundary condition.在周期性边界条件下的k空间中,采用局域密度近似法和广义梯度近似法,对比计算两种体系的能量和表面结构。WCu汉语字典

Analysis of Transmission Characteristics for Guide and Groove-guide with Arbitrary Cross-section by an Integrated Equivalent Circuit Method with Step Approximation;任意截面波导和槽波导传输特性的综合阶梯近似等效电路法分析WCu汉语字典

A Derivative-free Algorithm Based on Approximate Descent Direction;一个基于近似下降方向的免梯度算法WCu汉语字典

Asymptotically Almost Periodic Solutions of Second-order Equations with Gradient Operators带梯度算子二阶方程的渐近概周期解WCu汉语字典

Passengers would sit in a wide cabin, rather like a small amphitheatre.客舱宽敞大方，而不再类似小型阶梯教室。WCu汉语字典

The Optimization Design of One Type of High Order Control System Which can be Approximated to Four Order System一类可近似为四阶的高阶控制系统的优化设计WCu汉语字典

Approximate Solution for the Fractional-order Bagley-Torvik Equation分数阶Bagley-Torvik方程的近似解WCu汉语字典

The Improvement of Richardson's Three Order Approximate Analytical Solution of Halo OrbitHalo轨道Richardson三阶近似解析解的改进WCu汉语字典

An Approximate Analytical Solution to the Family of Time Fractional Klein-Gordon Equations时间分数阶Klein-Gordon型方程的解析近似解WCu汉语字典

The Asymptotic Solution of Singular Perturbation with Step-Type Contrast Structures具有阶梯状空间对照结构的一类二阶奇摄动方程的渐近解WCu汉语字典

Three Stages in Modern Social Development--Interpretation of the Chinese Modern History from Cultural Perspective;近代社会发展的三个阶梯——以文化的观点诠释中国近代史WCu汉语字典

escalator tunnel阶梯式自动电梯隧道WCu汉语字典

Geometrical-Optics Approximation of on-Axis Gaussian Beam Scattering by a Gradient Refractive Index Sphere梯度折射率球对在轴高斯波束散射的几何光学近似WCu汉语字典

ANY ORDER APPROXIMATE ANALYTICAL SOLUTIONS OF ACCELERATOR NONLINEAR DYNAMIC SYSTEM EQUATIONS加速器非线性动力系统方程任意阶近似解析解WCu汉语字典

Second-order Approximation Dynamic Optimization for Structures with Interval Parameters;结构区间参数的二阶近似动态优化方法WCu汉语字典

A Study on Ornstein-Zernike Equation Theory for Electrolytes Based on First-Order Mean Spherical Approximation;基于电解质的OZ积分方程一阶平均球近似求解WCu汉语字典

Numerical Solution and Analytic Solution for two Classes Fractional Differential Equation;两类分数阶微分方程的近似解析解与数值解WCu汉语字典

Research on Approximate Solution for Nonlinear Multi-variables Harmonic Control System非线性协调控制系统状态方程任意阶近似解WCu汉语字典

The high building high level earthquake type approximate calculation under earthquake高层建筑地震作用下高阶振型影响的近似计算WCu汉语字典