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- Longitudinal wave technique 纵波法
- Based on the propagation theory of the longitudinal wave in the pile, the present paper presents a technique for determining such parameters as back-and-forth time of reflection wave and apparent reflection coefficient. 摘要本文以纵波在杆中传播的理论为根据，介绍一种用于确定反射波往返时及视反射系数等参数的方法。
- Based on analysing the geneses of gravel sand reservoir in tan-hai area, the reservoir lithology is identified with cross plot technique of yang surname modulus and longitudinal wave slowness. 摘要通过对滩海地区含砾砂岩储层成因的分析，利用杨氏模量与纵波时差交会图法识别出岩性。
- A pressure disturbance cannot drive the energy release profile uniformly to the anti-node region to result in a sustained longitudinal wave. 压力扰动不可能驱使能量释放分布图移至波腹区域以产生持续的纵向波。
- Secondly, the relation between longitudinal wave propagation velocity and resin-bonded stiffness of full length anchoring bolt is simulated. 然后模拟纵波在全长锚固锚杆内传播速度与树脂-围岩粘结刚度之间的关系；
- This paper deduces the errors sources from the process of ultrasonic longitudinal wave testing and evaluates its uncertainty. 本文分析了超声波探伤纵波检测的误差来源，评定了在探伤过程中的不确定度。
- Secondly,the relation between longitudinal wave propagation velocity and resin-bonded stiffness of full length anchoring bolt is simulated. 然后模拟纵波在全长锚固锚杆内传播速度与树脂-围岩粘结刚度之间的关系;
- The virtues of the millimeter wave technique were introduced and the passive countermeasures were put forth. 因此，本文介绍了毫米波技术的优点及其可行的一些无源干扰方法。
- Upon the interface of homogenuous isotropic elastic media the incident longitudinal wave produces the reflected longitudinal (P-P) wave and upgoing converted shear (P-SV)wave. 在均匀各向同性介质的分界面上入射纵波时，除产生纵波反射P-P波外，还会产生转换横波的反射P-SV波。
- This paper deals with the application of the Rayleigh wave technique to reservoir survey with the Shimen reservoir as a case study example. 摘要结合工程实例，介绍瑞雷波勘探技术在石门水库勘察中的应用。
- Contrast with common vertical longitudinal ultrasonic wave, slant longitudinal wave could be applied to test the nozzle welds on vessel, header, bolts and austenite material. 介绍了超声纵波斜入射法在电站锅炉压力容器管座角焊缝、螺栓和奥氏体钢锻件等部件探伤中的应用。
- The principle of reforming the soot blow system of air reheater to use weak explosion wave technique to clear ash is raised. 针对柳林电厂空气预热器积灰严重的问题,采用弱爆炸波清灰技术对原有吹灰系统进行改造取得良好效果,并用数据对比进行了分析说明。
- As a new application in oil production the acoustic wave technique has an effective influence on wax control and viscosity reducing. 作为物理法采油技术的一种新应用,声波技术在原油防蜡降粘方向取得了有效的应用效果。
- Based on the ultrasonic guided wave technique and the dispersive waveform prediction method, a method about how to image defects in pipes is presented. 摘要在导波传播理论和频散波形预测理论的基础上，研究了超声导波在检测管道时，如何利用时域波形重构缺陷图像的问题。
- The longitudinal wave cannot exist near the surface of a solid, and those exist near it are gliding irrotational waves. 纵波不能在固体表面存在,在固体表面存在的是相应的滑行集散波。
- In longitudinal waves, it is measured from compression to compression or from rarefaction to rarefaction. 在纵波中是以密波与密波或疏波与疏波之间的距离来量度的。
- The dispersion curves and simulated dispersion relationship of longitudinal waves without the Langmuir wave, the ion sound wave and the ion plasma wave are obtained. 得到了除朗缪尔波、离子声波和离子等离子体波外其它纵波的色散曲线和拟合色散关系。
- Numerical results demonstrate that laser generated surface acoustic wave is comprised with three components, namely surface skimming longitudinal wave, surface shear wave and Rayleigh wave. 数值结果表明：在激发的超声表面波中包括掠面纵波、表面横波和单极性的Rayleigh波等三种模式。
- Chapter 4 presents the study on the longitudinal wave propagation and dispersion in single-walled carbon nanotubes through the use of the continuum mechanics and the molecular dynamics simulation based on the Terroff-Brenner potential. 用连续介质力学方法及基于 Tersoff-Brenner 势的分子动力学方法对比研究了碳纳米管中纵波的传播及频散问题。 主要考虑了微结构对碳纳米管中纵波频散的影响。
- This paper introduces in detail the principle and working method of transient Rayleigh waves technique and its application in Jincheng coal Co.Ltd. 论述了瞬态瑞利波探测技术的工作原理、工作方法和在山西晋城煤业集团矿区的应用情况。
