为避免二维波方程中的大量计算，使用二维波动方程的中心差分近似来模拟流体运动。
This paper used centered difference to simulate the fluid movement in order to avoid lots of calculations in two dimension wave equation.
本文针对求解二维波动方程的参数问题，利用有限元方法把波动方程反问题转化为有限元反问题，并利用脉冲谱技术，即一个迭代过程进行求解。
In this paper, for solving the parameter problem of two dimensional wave equation, the method of Finite Element and the Pulse Spectrum Technique, i. e. the iterative process are used.
在二维情况下，忽略热扩散效应，利用汉克尔积分变换法和最陡下降法，求解热扩散方程和波动方程，得出了位移的解析表达式。
The thermal equation and wave equation are solved by the methods of Hankel transform and steepest descent, and the general expression of displacement is obtained.
基于柱面波和球面波动方程，推导建立了适用于无限介质中二维和三维瞬态波动分析的显式时域辐射边界条件公式。
Locally explicit time-domain radiation boundary condition for 2-d and 3-d transient analyses of wave propagation in unbounded media were developed for the cylindrical and spherical wave equations.
波动方程偏移保持了波场动力学特征，依此本文应用共方位角叠前深度偏移技术来实现二维资料三维化处理。
Wave equation migration can preserve the kinetic characteristics of wave field, so this paper applies common-azimuth prestack depth migration technology to realize 3D process for 2D seismic data.
波动方程偏移保持了波场动力学特征，依此本文应用共方位角叠前深度偏移技术来实现二维资料三维化处理。
Wave equation migration can preserve the kinetic characteristics of wave field, so this paper applies common-azimuth prestack depth migration technology to realize 3D process for 2D seismic data.
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