| 1. | He discussed the propagation of waves through the earth's interior .
他探讨了地震波在地球内部的传播。 |
| 2. | Propagation of waves ; terms and definitions
电讯技术.电波传播.术语定义 |
| 3. | Velocity of propagation of wave front
波前传播速度 |
| 4. | In this study , we applied the reversibility of elastic wave to a discussion of the reverse time propagation of wave equation
摘要本文应用波动方程式的可逆性讨论弹性波的逆时影像重建。 |
| 5. | The multiply scattering method is used to simulate the propagation of waves in these structures . on the other hand , we also manufacture the samples and measure the transmittance of light with hp8510c vector network analyzer
按照这些条件，设计制作了相应的光子晶体模型，并用多重散射的方法对它们分别进行了模拟计算。 |
| 6. | The fbc for connecting the subdomains on fictitious boundary is developed according to the actual field distribution in the waveguide to ensure the propagation of waves between adjacent subdomains . the relaxed algorithm is introduced to improve the iterative convergence
文中从实际场分布出发，在划分区域的虚拟边界上给出了连接子域的吸收虚拟边界条件，并通过引入松弛算法，构建了一种能够用于分析波导问题的松弛迭代区域分解法。 |
| 7. | The thesis mainly deals with the third part of across : " sompi " cepstrum methods . the principle and system structure of across a re first introduced . the propagation of wave in media is simply studied and its transfer function in frequency domain is modeled as superimposed damped exponential sinusoids , each damped exponential sinusoid is called as a wave element and its exponential index part consists of two factors : group velocity travel time and decayed factor
为此，首先介绍了across的原理与组成和通过简单地讨论地震波在介质中的传播情况建立起介质的传递函数模型，指出：在一个狭窄的频率窗口里，介质的传递函数可以用有限个阻尼正弦项的叠加的形式表示，每个阻尼正弦项代表一个波成分，其指数部分包括两个因子：波成分在介质中的传播时间和衰减因子。 |
| 8. | Abstract : the propagation of waves passing over the abrupt changing topograghy can be simplified as a wave passing over a step . this flow process can be reasonably simulated by a 2 - d numerical wave flume developed in this paper , especially for the nonlinear transformation of the wave on the step . numerical results have been verified by experimental data
文摘:波浪在水深剧变地形上的传播，可以简化为波浪在台阶地形上的传播.利用二维数值波浪水槽可以很好地模拟这一过程，特别是对波浪在台阶上的非线性变形.数值计算结果与实验测量进行了比较，结果吻合良好 |
| 9. | Furthermore using the variation principle in the elasticity , the wave - motion equation is derived in the finite deformation elastic thin rod with viscous and transverse inertia effects , and the characteristic curves and their characteristic relations are obtained by characteristic line method , and the influence of viscous and geometrical - dispersive effects on the propagation of wave is analyzed
再利用弹性力学中的变分原理，导出了同时计及粘性和横向惯性效应时的弹性细杆的几何非线性波的波动方程，用特征线法得到它的特征线和特征线上的相容关系，分析了粘性耗散和几何弥散效应对波的传播速度的影响。 |
