波动方程

The numberical simulation of sucker-rod pumping systems is a mathematical method based on wave eguation to analyse the behavior of the systems.

有杆抽油系统的数值模拟是以波动方程为基础研究系统工作动态的数学方法。

It can be said that wavelet-based numerical method of wave equation is very potential.

可以说，基于小波的波动方程数值算法是一个非常有潜力的算法。

Then we get atwo-dimensional wave equation. By numerical simulation of the wave equation using

再利用差分方法对这个波动方程进行数值模拟，得到史瓦西小黑洞的电磁场拟正则模，并对其特性及相应的物理意义进行了深入的分析和研究。

Stability is one of the most important conditions in which we numerically solve the wave equations.

稳定性是数值计算波动方程的最重要条件之一。

Based on the theory of the electromechanical analogy and the special wave equation,the equivalent circuit of the exponential acoustic waveguide was derived,the formula of its impedance transformation was obtained.

基于机电类比原理，从特殊形式波动方程出发，推导出了指数形变截面声波导管的等效电路，从等效电路推导出了声波导管的阻抗转移公式。

Paraxial approximation absorption boundary condition based on acoustic wave equation can obtain better absorption results by increasing paraxial approximation order of Taylor series. However, this kind of operation will increase the complexity of difference computation, and result in instability of computation process.

基于声波波动方程的旁轴近似吸收边界条件可以通过提高泰勒级数展开的旁轴近似阶数获得更好的吸收效果，但这样不仅增加了差分计算的复杂性，同时还导致计算过程不稳定。

Based on the wave equations established in general coordinate system for orthorhombic anisotropy media, this paper di...

在建立一般观测坐标系下正交各向异性介质波动方程的基础上，着重讨论了相应的伪谱法波场数值计算的稳定性条件，进而用伪谱法实现了正交各向异性介质弹性波场的正演模拟，获得了很好的模拟效果

This paper is to get the result of the experiment and completely realize the 3D symplectic wave equation prestack depth migration for the SEG/EAGE salt and overthrust model.

本文以实验效果的取得为目的，完整地实现了SEG/EAEG盐丘和推覆体模型的三维波动方程辛几何算法的叠前深度偏移成像计算。

The theoretical analysis and experiments are made to prove the dynamic vibrations produced by the lugs of a paddle wheel and the wave equation is proposed.

由理论分析和试验证明了桨式叶轮的推力和运动的波动性受轮叶数N的影响，并提出了力和运动的波动方程。

The derivation of the relationship between the paraxial wave equation and the complex source points is given and proved.

推导并证明了旁轴波动方程的解与复源点方法之间的一致性关系。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。