波动方程

First the equation of the plane wave should be obtained in equably medium.

首先，推导出光波在均匀空间传播所满足的波动方程。

The fact that solution of wave equation is equivalent to the extreme value of quadratic function solution was verified, and the existence and uniqueness of the quadratic function solution was also proved.

证明了波动方程的解和二次泛函极值解的等价性，以及二次泛函极值解的存在唯一性，为其在液压传动中流体瞬变分析的进一步应用提供了理论依据。

In this paper, Smith's finite difference solution of one-dimensional wave equation is applied to two prototype steel pipe testpiles 900 mm o.

本文将一维波动方程的史密斯差分解应用于华北渤海油田的两根开口打入的原型钢管试桩(外径900毫米，变壁厚、桩长分别为69及72米)。

Wave equation ; finite difference ; numerical modeling ; forward modeling

波动方程；有限差分；数值模拟；正演

Finite difference wave equation without boundary conditions of second-order forward time-slicing procedure.

详细说明：有限差分波动方程不加边界条件二阶正演时间切片程序。

In this paper, Smith's finite difference solution of one-dimensional wave equation is applied to two prototype steel pipe testpiles(900 mm o.d.with variable wall thickness and lengths of 69 and 72 m)which were driven with open ends in the Bohai oil field of North China.

本文将一维波动方程的史密斯差分解应用于华北渤海油田的两根开口打入的原型钢管试桩(外径900毫米，变壁厚、桩长分别为69及72米)。计算结果与现场实测值(包括以后所进行的静荷载试验)相比甚为符合。

A formula of the frequency change has been deduced from the wave equation to the first order approximation.

从波动方程出发，导出频率改变的一级近似公式。

And by using the single square root operator for wavefield extrapolation and the windowed Fourier frame expansion and reconstruction of wavefield, a method for local angle domain common image gather is proposed, i.e.

提出的波动方程反射角度域共成像道集方法可为进一步的叠前偏移数据振幅随角度变化分析和偏移速度分析工作提供基础。

A wave equation of discrete media is established using Hamilton's principle and the solutions of the plane wave problem are discussed.

运用Hamilton原理，建立起离散介质波动方程，同时，进行了平面波解的讨论。

It not only explores a novel application of the reproducing kernel Hilbert space theory, but also provides a new view on solving the differential equation.

本文的研究拓宽了再生核理论的适用范围，为波动方程的求解问题提供了新的框架。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。