振幅

To avoid or reduce re-analysis, we derived the augmentative matrix variation only in summation of the previous matrices time the outside-perturbed parameters by decomposing the element stiffness and mass matrix. The implicit function of amplitude about design variables such as cross-areas and lengths is changed into simplistic function about the perturbed parameters of design variables. Several methods for determining the value of perturbed parameters are detailed.

为避免或减少重分析，将有限元单元阵进行了分解变换组装，使振幅与设计变量如截面面积、长度的复杂隐函数关系转化为对设计变量摄动参数的显式关系，进而将设计变量摄动参数提取在分解后的几个常数刚度阵、质量阵之外，避免了在迭代求解过程中重组刚度阵与质量阵，较快地获得问题的解。

The key of AVO processing is to keep amplitude feature to obtain high fidelity seismic section.

AVO 处理的关键是保持振幅特征，获得高保真的地震剖面。

The inversion of AVO elastic parameters is an important way to reservoir prediction.

振幅随偏移距变化弹性参数的反演是储层预测的一个重要方法。

The theory of AVO is based on the Zoeppritz equations, which are complicated for reflection and transmission coefficients.

精确的Zoeppritz方程描述了反射振幅信息量与弹性参数之间的关系，其近似公式是进行AVO反演、AVO交汇图分析、岩性预测和烃类检测的基础。

In the inversion of elastic parameter by AVO, the components make different contributions to the inversion.

在利用振幅随偏移距变化进行弹性参数反演中，这些分量对反演所作的贡献是不同的，体现在各反射波的反射系数与弹性参数的信息量及其组合关系的关联程度是不同的。

We can see the P wave amplitude and traveltime difference with the azimuth and incidence angle in numerical simulation.

在数值模拟中可以看到随观测方位和入射角变化的纵波振幅和旅行时的差异。

The value of the area is direct proportional to the number of baffler and the parameter of free area ratio, but it increases exponentially with the diameter of the column and the pulsed amplitude.

峰面积值与脉冲萃取柱的板数和板开孔率参数成正比，与柱径和脉冲振幅成指数关系。

A bell-shaped mountain was used to study the influence of the topographic parameters on the amplitude of the lee wave.

利用一个三层模式和钟形山脉研究了中尺度地形参数对背风波振幅的影响。

With the use of ap- proximate zero order Bessel's function,we developed a fast approximate method to speed up the decomposition of plane wave,with its error analysed.

通常人们把水平叠加结果看成平面波，这对于通常所用的旅行时信息是正确的，而对于与振幅密切相关的波阻抗反演就不能满足要求了。

The phase of the first kind zero-order Bessel function has binary values,zero and π,thus,the distribution of amplitude of vibration can be measured through the phase of reconstructed wave.

第一类零阶贝塞尔函数相位只有0和π两个取值，所以利用再现光场的相位可以确定振幅分布。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。