Starting from the wave differential equation, a method is deduced to express the complex amplitude of light wave fields in the reference plane which is vertical to the optical axis.
在柱坐标下从微分波动方程出发，推导柱面光波的场分布，并利用远场近似条件导出当线光源与光轴成任意角度时，在垂直光轴方向的参考面上的复振幅表示。
According to coupled wave theory, and from the non-linear differential equation describing characteristics of reflection hologram, the reflective coefficient of reflection hologram is analyzed.
根据耦合波理论，从描述反射全息的非线性微分方程出发，对反射全息图的振幅反射系数进行了分析。
The periodic wave solutions of the generalized CH equation are investigated by using bifurcation theory of differential equations and numerical simulations.
用微分方程分支理论和计算机数值模拟方法研究广义CH方程的周期波解。
A condition of a one-order quasilinear partial differential equation of a traffic model forming unique shock wave is given end proved.
本文讨论了一交通模型的一阶拟线性偏微分方程激波产生唯一性的条件并给了严格的证明。
The large-amplitude rolling random differential equation has been founded of floating structure subjected to wind-wave and explosive loading.
建立了大型浮体结构考虑风浪和爆炸载荷作用的大幅横摇运动随机微分方程；
This paper performs one-way wave decomposition for 3d wave equation, and 2 kinds of high approximation of up-going wave equation in low order differential equation system are derived.
对三维波动方程做单程波分解，给出了用低阶偏微分方程组逼近上行波方程的2种高阶近似表达式。
The numerical solution of wave propagation may be obtained by solving for the differential equation of medium motion.
通过求解介质运动做分方程，获得了波的传播问题数值解。
The differential equation with varied coefficient of the SH-wave in the functionally graded materials is established.
建立了功能梯度材料中SH波的变系数微分方程。
Upon the basic electromagnetic theory, wave propagation equation on an axis symmetrical case is derived. Numerical simulation method for solving the partial differential wave equation is presented.
从基本电磁理论出发，推导轴对称条件下电磁波的波动方程，给出求解此类波动方程的数值仿真方法。
Upon the basic electromagnetic theory, wave propagation equation on an axis symmetrical case is derived. Numerical simulation method for solving the partial differential wave equation is presented.
从基本电磁理论出发，推导轴对称条件下电磁波的波动方程，给出求解此类波动方程的数值仿真方法。
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