波状

The propagation matrix method used widely in stratified media is extended to laterally inho-mogeneous media,and a numerical method known as generalized propagation matrix method for simulating elastic seismic wave propagation in inhomogeneous media is presented by using mixed variable elastic wave equation and matrix exponent solution of system of linear ordinary differential equations.

应用混合变量弹性动力学方程和线性常微分方程组的矩阵指数解法，将层状介质中广泛应用的弹性波传播矩阵解法推广至横向非均匀介质，给出了一种可计算复杂地质体中弹性波传播的广义传播矩阵数值解法。

Based on the theory of rayleigh wave propagation in layer medium,the variation of wave velocity can reflect the variation of rock and soil mechanical property.

根据瑞雷面波在层状介质中的传播理论，波速的变化可以反映出岩土力学性质的变化。

Wave refraction in a uniform layer under the conditions of the refracted wave ray simulation program, please advise!

一个折射波在均匀层状介质条件下的折射波射线模拟程序，请指教！

Expanding the modification model in vector spherical harmonics, we obtained the absorption and scattering coefficients of the beam wave case.

将所得的修正解按矢量球面波函数展开，就球形粒子对束状波的消光系数进行推演和计算，并与平面波Mei理论和国外的实验结果进行比较，验证了修正解的正确性。

Umbels simple or compound; peduncles racemous, cymous or corymbose-branched; bracts foliaceous, usually serrate; bracteoles small, entire, rarely lobed; umbellules with both sessile or subsessile, bisexual flowers and pedicellate, staminate flowers.

伞形花序单生或复合；花序梗小总状花序，聚伞花序的或伞房状分枝；苞片叶状，通常使成锯齿波；小苞片小，全缘，很少有裂；有两无柄或近无柄的小伞形花序，两性花和有花梗，雄花。

Results indicate that even caverns significantly smaller than 1/4 wavelength are detectible on conventional band-width seismic sections as diffractions migrated into bead-type events.

结果表明当绕射波偏移为珠子状的同相轴时即使远小于四分之一波长的溶洞在常规带宽的地震剖面上也是可分辨的，绕射波是溶洞高度和宽读的函数。

In the Sixth Chapter, the Wavelet analysis method is introduced in discussing some acoustic imaging problems related to the physical background of the ultrasonic detection. In the light of the solution of some theoretical problem in the 2D Wavelet transmission of two components form, the enhancement and identification of the spotty and fibriform faults of the acoutic image, along with two acoustic image deblurring methods based respectively on the acoustic physical feature analysis and the acoustic image's spatial feature analysis of the object, are realized. Therefore the image degeneration problem resulting from the acoustic beam diffusion or the acoustic focus diffusion in the ultrasonic detection are effectively improved. The software for this purpose has also been developed.

第六章首次应用小波分析的方法，研究了与超声检测的物理背景有关的一些声象处理问题，在解决了二分量形式的二维小波变换中的一些理论问题的基础上，建立起了对声象中点状和线状缺陷目标的增强与分离方法，以及分别基于目标的声学物理特征分析和基于目标声象空间特征分析的二种声象弥散消除方法，实验分析结果表明，这种方法较好地解决了超声检测中由于声束截面或声焦点扩散所造成的成象退化问题。

When the multilayered media contain fluids, the dispersion curves assume the zero mode curve which is inexistent in solid multilayered media. The zero mode curves can be regard as a sign of the existence of fluid interlayer in multichannel analysis of surface waves.

根据文中对4个理论模型的模拟结果来看，与固体层状介质的情况相比，当存在流体夹层时，瑞利波频散曲线模式中多出了一个文中定义的0阶模式，在今后的多道瞬态瑞利波法应用中，应该可以将其看成是流体介质夹层存在的标志性曲线。

When the multilayered media contain fluids, the dispersion curves assume the zero mode curve which is inexistent in solid multilayered media. The zero mode curves can be gard as a sign of the existence of fluid interlayer in multi-channel analysis of surface waves.

根据文中对4个理论模型的模拟结果来看，与固体层状介质的情况相比，当存在流体夹层时，瑞利波频散曲线模式中多出了一个文中定义的0阶模式，在今后的多道瞬态瑞利波法应用中，应该可以将其看成是流体介质夹层存在的标志性曲线。

And the parameters inversed by using the GA are in agreement with those of real media.

此外，本文最后为了与频率波数分析的结果进行对比，研究了时频分析方法-魏格纳维尔分布，用数值模拟和实验结果分析了层状介质中瑞利波的频散曲线。

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。