approximate expansion
英 [əˈprɒksɪmət ɪkˈspænʃn]
美 [əˈprɑːksɪmət ɪkˈspænʃn]
近似展开式
双语例句
- The new method firstly obtains two approximate rotational invariance relations about distributed sources central DOA by the Taylor series expansion of array steering vector.
新方法首先通过阵列方向矢量的泰勒级数展开获得关于分布源中心DOA的两个近似旋转不变关系。 - The nonlinearity of the performance function reduces the errors because of the derivation and the approximate expansion.
对于功能函数的非线性，避免了求导或近似展开而产生的误差。 - We first study expansion and contracting mode of expansion arm in theory, and deduce some approximate formulas. Then its expansion waveform is observed and traced with an atomic force microscope ( AFM) system.
我们首先从理论上研究了膨胀臂的膨胀收缩模式，并推导了一些公式，然后利用原子力显微镜测得了其膨胀波形。 - The large domain solution and its approximate expansion of the initial-boundary problem for compressible flow equations
可压缩流方程组的大范围解和渐近展开 - When parameters of the input of a large scale system deviate, its approximate reduced order model can be obtained by using the asymptotic expansion of the input function.
当大系统的输入函数的初始参数发生偏离时，其最优简化模型的近似模型可以利用输入函数的渐近展开得到。 - The simulation algorithm of flattened Gaussian beams ( FGBs) passing through hard-aperture optics is improved, and an approximate closed-form propagation equation is derived, where a product of Fourier series and complex Gaussian function expansion is adapted to the window function of a hard-edged aperture.
用傅里叶级数和复高斯函数的乘积对硬边光阑的窗口函数进一步拟合，对平顶高斯光束通过硬边光阑光学系统的模拟算法作了改进，并给出了近似解析传输公式。 - An approximate graphical solution of injection pressure is proposed to clearly show the pressure at injection ending instance and the residual one in the oil injection line, and show how to predict the atomizing quality during the free expansion period in the injection process.
应用喷射过程的近似图解法，清晰地显示出停止喷油时刻及高压油管中残余压力的大小，并推演出如何判断喷射过程中自由膨胀期的雾化质量。 - The main purpose of this paper is to investigate the high dimensional limiting behavior of Pearson ⅱ type elliptical matrix distribution, and obtain the approximate expansion of the characteristic function.
本文研究了PearsonⅡ型椭球矩阵分布的高维极限行为，并获得特征函数的近似展开。 - The approximate expansion of unextensible surface
不可展曲面的近似展开 - In order to carry out dynamic shape optimization for continuum structure, virtual displacements of control point are selected as the design variables, approximate model is constructed by Taylor series expansion, move limit of design variables are adopted to ensure algorithmic reliability.
在此基础上，采用控制点的虚拟位移为设计变量，运用一阶泰勒展开建立优化模型，设置设计变量的运动极限保证了优化迭代的稳健性。 - An approximate solution of the paraxial ray equation for cylindrical dense electron beams was obtained by means of the Taylor expansion.
本文提出圆柱形强流电子束的傍轴轨迹方程，可以用台劳展开求出它的近似解。 - An approximate boson representation of the SO ( 8) model Hamiltonian in the composite particle representation method is given and compared with the boson expansion and the dyson boson mapping method results.
求出了SO（8）模型哈密顿量在复合粒子表象中的玻色子近似解析表示，并与玻色子展开方法和Dyson玻色子映射方法求出的结果进行了比较。 - In this paper, a kind of approximate dyadic expansion model of inverse transfer function matrix to counter the complex plant is set up and the controller matrix to meet the needs of the system is designed.
本文建立复杂对象逆传递函数矩阵的近似并矢展开模型，设计控制器以满足系统性能要求。 - Symbolic Model for Analog Circuits and Its Approximate Expansion
模拟电路符号分析模型及其近似展开 - The approximate solution for the transmitted and reflected waves wave at the vertical wall of the step is obtained by using the methods of the matched-asymptotic expansion and the Green function and some mathematical tech technique such as the conformal mapping theory and the singular Fredholm integral equation theory.
通过匹配渐近展开和格林函数的方法，借助保角交换和求解奇异Fredholm积分方程的技巧，获得了两层流体系统中弱非线性内波在台阶直壁处反射和透射的近似解。 - Series Perturbations Approximate Solutions to N-S Equations and Modification to Asymptotic Expansion Matched Method
N-S方程的拟序扰动序列与改善的渐近展开匹配法 - Control System Design by Using Approximate Dyadic Expansion Model of the Inverse Transfer Function Matrix
用逆传递函数矩阵的近似并矢展开模型设计控制系统 - In this paper, the sea-air phenomena ENSO in a class of atmospheric physics is discussed. Under suitable conditions, using a perturbed theory and method, we obtain simple and rapid arbitrary order to approximate asymptotic expansion of solution for the corresponding nonlinear problem.
文章讨论一类大气物理中海-气现象的ENSO模型，在一定条件下，利用摄动理论和方法较简捷得到相应非线性问题解组的任意次近似的渐近展开式。 - First-order Taylor approximate expansion of the first-order partial derivatives of the error function, then get a Newton iterative format.
在这个计算过程中，对误差函数的&阶偏导数进行泰勒展开近似得到的牛顿迭代格式是严重病态的。 - Based on the Newmark method, the approximate displacement response in each time step can be obtained by using the acceleration of the epsilon-algorithm table, whose vector sequence is constructed by the Neumann series expansion.
基于计算结构动态响应问题的Newmark方法，在每个时间步中利用Neumann级数展开构造向量序列，然后通过Epsilon算法加速该序列的收敛，从而可以得到该时间步中的近似位移响应值。 - Firstly, the outline and mathematic model for excitation system are shown, then an approximate model controller is presented using a direct linearization approach via Taylor expansion, and the control law is realized using RBF neural networks modeling.
首先介绍了励磁系统的一般原理和数学模型，随后提出了一种逼近模型控制器，采用基于Taylor扩展的线性化方法来得到近似的逼近模型控制律，利用径向基神经网络建模来具体实现控制律。