Dirac delta function
英
美
网络 狄拉克δ函数; 狄拉克函数; 单位脉冲函数
双语例句
- The calculation shows that the system point spread function is quite close to the Dirac delta function.
结果表明：系统的点扩散函数接近理想的δ函数； - We analyze and solve two questions in the relativistic correction of ground energies of two-electron atoms: the expectations of the square of the kinetic energy operator and the three-dimensional Dirac delta function.
分析并推导求解了双电子原子基态能量的相对论修正中的两个基本问题：动能平方算子和三维Diracδ-函数的基态期望值。 - The increase of the area of the inner surface can be considered as Heaviside step function, its derivative is Dirac delta function.
内表面的增加可以用Heaviside阶梯函数来描述，它的微分为Dirac函数。 - The distribu-tion functions which are used to describe the reaction system are defined by using Dirac delta function, and approximated with generalized Fourier series.
该方法利用Dirac-δ函数定义描述反应体系的有关分布函数，并利用正交函数进行广义Fourier展开，从而推导出总反应速率表达式。 - Based on the integral representation of Dirac-delta function and Cauchy's theory of residues, the Green's function for two-dimensional anisotropic elastic media with piezoelectric, piezomagnetic and magnetoelectric coupling effects is derived.
基于Dirac-delta函数的积分表示和Cauchy留数定理，导出了压电、压磁和电磁各向异性弹性介质二维问题的Green函数。 - Based on Robinson's work, and two-phase calculus, the Dirac Delta function has been discussed in some detail.
本文运用两相微积分学，深入研究了狄拉克δ函数。 - Dirac Delta Function Discrete Ordinate Method for a One-Speed Transport Equation with Anisotropic Scatterings
δ函数SN方法求解含各向异性散射输运方程的本征值问题 - The system point spread function ( PSF) is designed to be similar to the Dirac delta function. The experimental results and the theoretical calculation of the PSF are in accordance.
计算并测试了系统的点扩展函数，实验结果与理论计算结果相吻合，其结果都接近于二维的δ函数。 - The nonlinear approximations based on the generating functions of the Legendre polynomials were studied. It was proved that such nonlinear approximations to the Dirac delta function on were convergent. Moreover, the approximate errors was examined.
讨论了利用Legendre多项式母函数的非线性逼近，证明了当这类非线性逼近应用于Diracδ函数时逼近是收敛的，且导出了逼近误差。 - Dirac Delta Function Via Nonstandard Analysis
用非标准分析表示Diracδ函数