differential approximation
英 [ˌdɪfəˈrenʃl əˌprɒksɪˈmeɪʃn]
美 [ˌdɪfəˈrenʃl əˌprɑːksɪˈmeɪʃn]
微分逼近
双语例句
- This paper proposed a new algorithm for image restoration based on spatial continuity and differential approximation.
文中提出了一种基于微分近似、利用图像的空间连续性进行图像修复的算法。 - The absolute differential cross sections of eAr scattering are calculated employing the second Born approximation with optical potential model and the best results are obtained.
应用这个较好的理论，利用光学势模型进行了计算，得到了更好的结论。 - SPWM differential second approximation arithmetic
SPWM差值二次逼近算法 - Then the differential and partial scattering cross sections for collisions between He atoms and HCl molecules have been calculated by using CC ( Close_Coupling) approximation method. Finally, the law governing the changes of the partial scattering cross sections has been given.
然后采用CC近似方法计算了He-HCl碰撞体系的微分散射截面和分波散射截面，并总结了分波散射截面的变化规律。 - The differential interference angle of Λ-Related Quantum Interference of 1 Π-state diatom was presented to measure the degree of coherence, by using the first order Born approximation of time-dependent perturbation theory.
作者文运用含时微扰的一级波恩近似理论，提出了衡量干涉程度的1П态双原子分子中关于∧量子干涉的微分干涉角。 - In order to test a glass-shell measurement based on the Linear Variable Differential Transformer ( LVDT), the sphere surface fitting is done with least square approximation, and its corresponding square surface is founded with its radius of curvature.
为估计一种基于线性可变差动传感器（LVDT）玻壳测试系统的质量，用最小二乘法对测试曲面进行球面拟合，得到相对应的玻壳曲面。 - The differential difference equation described the optical bistability with delayed feedback is reduced to a difference equation with delayed time T+ τ in the first-order approximation, but to a multiple iterated equation in the higher-order approximation.
在一阶近似下，描述延时反馈光学双稳性的差分&微分方程被简化为一个延时为T+τ的等效延时差分方程，在进一步的近似下被简化为一个多重迭代方程。 - Based on the equilibrium and compatibility conditions, a system of second order linear simultaneous differential equations expressed in terms of shear flow is derived and solved by the approximation of spline function.
根据平衡与协调条件，导得了以剪力流来表示的二阶线性微分方程组，并用样条函数逼近法进行求解。 - Under the pro-per assumptions, using the method of composite expand and the differential inequalities theory, we obtain the existence and a higher order approximation of the solution.
在适当的假设下，利用复合展开法和微分不等式技巧，我们获得所述问题的解的存在性和高阶渐近估计。 - In this paper, by use of some new differential and integral inequalities, the unique solution and iterative approximation of the two-point boundary value problem for integro-differential equations in Banach spaces are investigated.
本文利用一些新的微分和积分不等式研究了Banach空间中积－微分方程的两点边值问题解的存在唯一性，给出了解的隐式迭代序列和误差估计式。 - For one-dimensional convection-diffusion equation, at first, the differential equations is semi-discrete approximation.
本文研究了求解对流扩散方程的指数型差分格式。 - We calculate the differential cross section of α-α elastic scattering with the complete expansion formula of the Glauber amplitude of high energy nucleus-nucleus elastic scattering and the rigid projectile approximation.
本文在高能量下，用核-核弹性散射Glauber振幅全展开的一种简便计算方法和硬球近似方法同时计算了α-α弹性散射的微分截面。 - In this paper, the author proves the existence and stability of global solutions for abstract functional differential equations by using the method of successive approximation, which are the generalization of the results in ordinary differential equations.
本文在一次近似方程的解具有指数衰减性质的条件下，采用逐步逼近方法得到了原方程整体解的存在唯一性和稳定性结果。 - A linear multi step fuzzy logical system for identifying unknown dynamic systems described by ordinary differential equations is presented. The fuzzy system is constructed according to the linear multi step approximation method for solving ordinary differential equations.
根据求解常微分方程的线性多步逼近方法构造了线性多步法模糊逻辑系统以辨识由常微分方程所描述的未知动态系统。 - Starting from the nonlinear differential equation for a non-uniform ferromagnet in mean field approximation, we apply the bifurcation theory to discuss the pheno-mena of magnetic phase transition.
从描写非均匀铁磁体的平均场近似的非线性微分方程出发，本文用分支点理论处理相变现象。 - Differential Equation Approximation of Fatigue Crack Growth Curve
疲劳裂纹扩展曲线的微分方程拟合法 - Discussion of zero differential overlap approximation in terms of density functional theory
零微分重叠近似的密度泛函理论探讨 - Not only a new expression of the turbine's discharge and differential pressure of the Spiral case was proposed, but also the detailed approximation process and computing formula were given.
并给出了新的水轮机流量与蜗壳压差关系表达式，同时也给出了详细的逼近计算过程和计算公式。 - Firstly, the partial differential equation satisfied by underlying put options is transformed into a series of differential equations, obtaining approximation solutions.
首先对原生看跌期权的价格所满足的偏微分方程离散化为差分方程，求得原生期权价格的近似值； - All differential cross sections ( DCS), partial wave cross sections ( PCS) and total scattering cross sections ( TCS) have been achieved by using close-coupling approximation method to calculate the three systems, and results above have also been discussed and analyzed.
用密耦近似方法对He-HF、He-HCl和He-HBr三个碰撞体系进行计算，得出了各种微分散射截面、分波截面和总散射截面，并将计算结果进行讨论和分析。 - The former is accomplished by getting absorption cross section applicable for the system through convoluting standard cross section with instrumental function, and then separating the differential part from slow varying part by polynomial approximation method.
参考光谱的处理是将标准吸收截面与仪器函数卷积得到仪器条件下的吸收截面，采用多项式法将差分部分分离出来。 - The absolute differential cross sections of e-Ar scattering in the laser are calculated employing the second Born approximation with optical potential model in special scattering geometry that the incident electron beam is parallel to the polarization direction of laser field.
应用第二玻恩近似理论，在电子入射方向平行于激光场的极化方向这种特殊的散射模式下，利用光学型对激光场中电子氩原子散射进行了研究。 - Based on the differential geometry theorem, which local ellipse is the best linear approximation for smooth surface, an ellipsoidal basis function surface reconstruction method is given.
并根据微分几何学中局部椭圆对于光滑表面是最好的线性逼近的性质，提出可采用椭球基函数作为函数基进行曲面重建。 - In this thesis, as applications, we develop a differential geometric theory of the set of positive definite matrices by means of a specific class of con-nections introduced into it. Using the theory we derive interesting geometrical interpretations for matrix approximation.
作为应用，这篇论文还通过引进特殊的联络介绍了正定矩阵集的微分几何理论，运用这套理论我们获得了矩阵逼近理论的一些有趣的几何解释。 - So the absolute differential cross sections of e-Ar scattering are calculated with some different potential models by applying the Second-order Born approximation theory, respectively. And the calculation results are compared with experiments.
接下来，利用二阶玻恩近似方法，计算了不同原子势模型下激光场中电子被氩原子散射的散射截面并与相关实验进行了比较。 - The proposed method combines derivative estimation with classical differential geometry theory, and discretizes the geometric properties of the parametrized differential curve based on the definitions of the discrete derivatives. Then, the geometric properties are estimated from discrete curves by using the discrete approximation.
该方法将导数估算与经典微分几何理论相结合，通过离散导数的定义将普通参数化曲线的几何特性离散化，并以此估算出离散曲线的几何特性。 - Based on the assumption of long thickness-shear waves and thickness-shear approximation, the nonlinear equation of thickness-shear modes has been transformed into an ordinary differential equation depends on time by Galerkin approximation.
基于长厚度剪切波假设和厚度剪切近似理论，本文利用伽辽金法将厚度剪切振动的非线性控制方程转化为关于时间变量的常微分方程。 - A method using the idea of differential approximation to represent the lane is studied, which has improved the precision of the Lane Departure Warning system, and need not to assign the road model in advance.
并使用了微分的思想对车道线进行逼近，无需事先指定道路线的模型，提高了车道偏离预警系统的精度。 - It should be pointed out that the partial differential equations are difficult to solve, and an analytical solution to these equations might not be possible. In general, the solution can be given in a numerical form by the approximation method.
需要指出的是，偏微方程的解析解一般很难得出，通常情况下需采用数值逼近的方法来求解。 - At present the numerical methods of partial differential equations are mainly based on grid approximation, such as finite difference method, finite element method and so on.
目前，求解偏微分方程的数值解法主要还是基于网格的近似，比如有限差分、有限元等等。