| 1. | Back scattering wave
反向散射波 |
| 2. | The time lag between the direct wave and the scattered wave could be computed by using the simplex algorithm method
当弯曲波在传递时遇到平板裂缝则会产生散射波，因此含有裂缝平板的板波讯号即包括弯曲波的直接波传与裂缝引起的散射波传。 |
| 3. | For the multiple scattering theory , the total scattered power from a random rough surface is contributed to , not only by single scattered waves , but also by those multiple scattered waves
在多次散射理论中，随机粗糙面的总散射功率不仅与单次散射波有关，而且还取决于多次散射波。 |
| 4. | In order to show the scattering and complex mode - conversion clearly , the total field is decomposed into longitudinal and transverse parts and the scattered field is obtained by subtracting incident wave from the total field
通过对纵横波的分离和在全波场中对散射波的分离，清晰地显示了裂纹对脉冲超声波的散射和复杂的模式转换。 |
| 5. | It can cancel the harmonic phenomena along cross directions and deduce the cost of computation . in chapter four using the impulse characteristics of inciding wave , we test the energy peaks in the transient impulse response of radar targets
本文第四章用能量峰概念和微分参数估计的方法，在时域研究了目标脉冲响应的特性，该方法可以分解出目标上不同散射中心的散射波。 |
| 6. | Given dynamic stress concentration factor around the interface circular lining . some examples and numerical results and illustrated , the influence of wave number , incident wave angle and combination of different medium parameters upon dynamic stress concentration factor are discussed
针对具体算例给出数据结果讨论了不同波数条件、不同入射角作用、不同的材料常数组合对界面衬砌散射波远场位移模式和散射截面的影响。 |
| 7. | This paper reviewed the researches and applications of seismic techniques in mining exploration in detail , including the fundamental researches composed of acoustic properties and scattering characteristics , regional reconnaissance studies . 2 - d and 3 - d surface seismic imaging and down hole seismic imaging , and pointed out the main seismic method used in mining exploration is reflected wave methods at present
摘要系统地总结了国内外现有金属矿地震勘探技术及其研究与应用现状，其中包括岩石物理性质分析和散射波场特征分析等基础研究、区域普查地震技术、二维和三维地震成像技术及井下地震勘探技术。 |
| 8. | The fact that wave velocity in quasi - saturated soil is equal to that of fully saturated soil could not be calculated by effective fluid compressibility or explained by unwell - distributed saturation . we account for this in a new reasonable way which was based on kuster scattering effect analysis
( 8 )根据kuster散射波理论，计算了饱和度大于85的准饱和土体的弹性波速，其结果与试验非常吻合；但是，通常所用的等效孔隙流体压缩系数的方法所计算的结果与实验结果差别很大，对此，笔者给予了一定的解释。 |
| 9. | Following a discussion on the application of seismic techniques to the budunhua copper deposit in inner mongolia as well as the achievements gained , the paper points out that the ore - controlling structure can be detected by using reflection events , and the heterogeneuos bodies related to orebodies might be studied by utilizing high - frequency irregular scattering waves
在对内蒙古布敦花铜矿勘查中的地震方法技术及取得的成果讨论后指出，利用反射同相轴可研究测区的控矿构造，利用高频不规则散射波可研究与矿体有关的非均匀体。 |
| 10. | Base on helmholtz integral equation , the incoherent scattering of plane wave from rough cone - shaped surface is derived with the far field theory and stationary phase method . and the incoherent scattering of plane wave from rough conical surface is also derived with shadowing function when the the radius of principal
最后计算并分析了入射光为= 0 . 48 m时,粗糙锥面的平面波散射特性,考察了入射波和散射波的几何关系,偏振态以及粗糙面统计参量等对散射强度的影响。 |
