1) scattered wave
散射波
1.
Post-stack attenuation of near-surface scattered wave.;
近地表散射波的叠后衰减
2.
This paper reviewed the definitions of seismic wave scattering,and investigated the characteristics of scattered wave,its differences with reflected wave,and the complex scattering behaviors of metallic ore seismic wave field.
介绍了地震波散射的概念、散射波特征、散射波与反射波的区别等散射波地震方法的基础内容,分析了金属矿地震波场复杂的散射特征。
3.
Results The calculation result shows that spherical surface of the conductor buried in sandy soil presents not only primary and secondary scattered waves but also multiple wave and creeping.
结果表明埋藏在沙土中的导体球面不仅仅存在一次和二次散射波,而且还存在多次波和爬行波。
2) scattering wave
散射波
1.
Preliminary study on scattering wave characteristics of heterogeneous geologic bodies.;
非均匀地质体散射波特征初探
2.
The principal theory of scattering wave including its definitions, classification and scattering wave field was introduced at first.
介绍了散射波的基本理论,包括基本概念、分类和波场;然后针对金属矿给出3种基本类型散射体(阻抗类型、速度类型和密度类型)及其相应的散射特征;最后论述了散射波在金属矿探测及近地表应用方面的进展,如利用散射波研究与矿体有关的非均匀体,研究散射波的强弱与介质非均质性的关系,研究散射波的波组特征,进行散射成像,以及研究界面起伏引起的散射效应等。
3.
Based on 2-D random-uniform medium model,we discussed the characteristics of scattering wave produced by heterogeneous bodies in complex medium,as well as the impact of scattering wave on direct wave and reflected wave with different-scale geologic bodies.
基于二维随机-均匀介质模型,讨论了复杂介质中由非均匀体产生的散射波的特性,同时讨论了不同尺度地质体条件下散射波对直达波和反射波的影响。
3) acoustic scattering
声波散射
1.
A new tree structure of fast multi-pole boundary element method for solving the acoustic scattering problem
求解声波散射问题的边界元快速多极算法的一种新型树结构
2.
Two types of methods are usually used for solving problems of numerical modeling of acoustic scattering.
声波散射的数值模拟问题一般用网格法或积分方程法解决。
4) scattering of SH-wave
SH波散射
1.
A numerical simulation for the scattering of SH-wave in infinite area;
吸收边界条件下平面SH波散射的数值模拟
2.
The scattering of SH-waves by an arc-shaped cylindrical hill above a subsurface cavity,or canyon,is studied based on the conjunction concept,using complex functions and the multi-polar coordinate method.
采用“契合”的思想,给出了地下孔洞与地面上的弧形凸起地形对SH波散射问题的解决方法。
3.
An analytic method is developed for the problem of scattering of SH-wave and dynamic stress concentration around a circular cavity near the interface of elastic half space.
建立了求解在含有圆形孔洞的弹性半空间中SH波散射与圆形孔洞附近动应力集中问题的解析方法。
5) wave scattering
波散射
1.
In this paper, based on non - Fourier s equation of heat conductivity, using image method and the expansion method of wave functions the thermal wave scattering of subsurface cylinder is investigated.
首次基于热传导波动模型给出了热波散射问题的一般解。
2.
Based on non-Fourier s law of heat conduction,by using the expansion method of wave functions,the thermal wave scattering by subsurface cylinders in the opaque body is investigated.
基于非傅里叶热传导定律,采用波函数展开法,研究了含圆柱缺陷非透明体中热波散射问题。
6) scattered Lamb waves
散射Lamb波
1.
Damage identification for plate-like structure using genetic algorithms and scattered Lamb waves;
应用遗传算法和散射Lamb波的板结构损伤识别
补充资料：自治场多重散射波Xα方法
分子式：
CAS号：
性质：用于分子计算的Xα方程。在Xα方程基础上采用松饼罐头(muffin-tin)近似，将分子分为三个区：原子内区I，原子间区II和原子外区III，进而对其势能采取近似，然后根据Xα方程分别对三个区域利用边界条件建立久期方程并求解，从而得到分子轨道和能级。该方法计算简单，用过渡态概念计算的结果和能谱数据接近，而且适于原子簇的计算。但是其计算精度比从头算差，对共轭分子计算也不理想。
CAS号：
性质：用于分子计算的Xα方程。在Xα方程基础上采用松饼罐头(muffin-tin)近似，将分子分为三个区：原子内区I，原子间区II和原子外区III，进而对其势能采取近似，然后根据Xα方程分别对三个区域利用边界条件建立久期方程并求解，从而得到分子轨道和能级。该方法计算简单，用过渡态概念计算的结果和能谱数据接近，而且适于原子簇的计算。但是其计算精度比从头算差，对共轭分子计算也不理想。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条