Poisson ' s ratios calculated from v ( subscript p ) / v ( subscript s ) can provide much tighter constraints on the crustal composition than either the compressional or the shear velocity alone 摘要由弹性波纵横波速比计算得到的泊松比，在利用地震波反演地下结构和物质组成时，可以提供比单纯地利用纵波或者横波波速更强的约束。
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。
It is pointed out that the wave of plasma channel can be decomposed into transversal and longitudinal wave , and different effects of the wave on the material removal in different pulse width are analyzed 指出放电通道的波动可以分解成纵波和横波2个分量，并分别分析了短、长脉冲加工时横波和纵波对材料蚀除的不同影响。
The resalts of numerical simulating indicat that velosity of p - wave has gentle anisotropy in fructured media at same time , the change of fractured density and azimuty has a little effects on velosity of p - wave 其数值模拟表明，在裂隙介质中，地震纵波速度只具弱的各向异性，同时裂隙密度和裂缝方位的变化对纵波速度的影响不大。
The longitudinal wave velocity in saturated soil could not only be useful , but reflect more information as well . the shear wave velocity may be different from the shear sewv , the difference is proved to be caused by porosity and structure factor 认为潜水面下纵波速度能反映更多的信息，并且，横波速度与骨架的横波速度也可以由孔隙率及结构因子引起差异。
Lamb waves method is mainly used to characterize thin plate materials , without using very high frequency , it can measure the velocity of transverse wave and longitudinal wave , depth of the plate , and the bonding quality between plates 兰姆波法主要用于表征薄板类材料，无需较高检测频率，可以测得板中纵波和横波的声速、板厚和板与板之间的结合特性等，检测精度较高。
The principle of the ultrasonic method applied to measure elastic coefficient is by measuring the velocity of ultrasonic wave propagation in the solid material to obtain the elastic module , shear modulus and poisson ratio 摘要弹性系数的超声检测，即借助固体弹性常数与超声波波速间的固有关系，通过测量纵波及横波在固体中的传播速度来获取材料的弹性模量、剪切模量及泊松比。
The optimum operating mode of kdp two - dimension aeo device is : the light promulgates along z axis , direct current electric field is loaded along z axis too , a pair of slow wave promulgates in xoy plane , which are vertical to each other 二维kdp声电光器件最优化工作模式为:光和电场方向沿z轴方向,声波采用xoy平面内两个相互垂直的慢波,其中正常器件为纵波、反常器件为切变波。
Defect location , representative defect and its ultrasonic echo characteristics corresponding of tungsten alloy shells had been systematically studied by both vertical wave sensors and transverse wave sensors calibrated after manufacturing 摘要采用纵波直探头和自磨制经校准的斜楔横波探头，对钨合金壳体部件进行了检测，并对钨合金壳体的缺陷定位、典型缺陷及其对应的回波特征进行了研究。
Taking the composite insulator as a measurement sample , knowing the waveform conversion condition on the boundary , only a conventional longitudinal testing probe is needed to measurement transverse wave produced by grazing incidence longitudinal wave 以复合绝缘子为测量样品，为提高测量横波的精度，根据超声波在边界上的波型转换条件，使用常规纵波探头对由掠入射纵波产生的横波进行测量。
