P波有时被看作纵波，因为它们以更快的传递速度穿越地球内部，因此最先被地震监测站台发现。
P-waves are sometimes known as primary waves, because they travel faster through the Earth and so are the first to arrive at monitoring stations.
快纵波的相速度随频率的增大以指数形式减小。
And the phase velocity of fast wave will decrease exponentially with frequency.
离开固体表面稍远的区域，可以有平行于表面传播的纵波声束存在，但是需要与相应的滑行集散波相互衔接。
A little apart from the surf ace, the longitudinal wave beam may exist and propagate parallel to the surface, yet has to connect with its corresponding gliding irrotational waves.
地震所引起的地面振动是一种复杂的运动，它是由纵波和横波共同作用的结果。
Caused by the earthquake ground vibration is a complex exercise, it is by the P-wave and S-wave interaction results.
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。
The longitudinal wave cannot exist near the surface of a solid, and those exist near it are gliding irrotational waves.
采用该传感器测试了激光超声表面波、兰姆波和纵波，获得了很好的波形。
The sensor was applied to detect several kinds of laser ultrasonic, such as surface acoustic wave, Lamb wave and longitudinal wave, well-defined waveforms were obtained.
一般地说横波速度大约是纵波速度的一半。
Normally the shear velocity is about half of the compressional velocity.
波有时被看作纵波，因为它们以更快的传递速度穿越地球内部，因此最先被地震监测站台发现。
P-waves are sometimes known as primary waves, because they travel faster through the Earth and so are the first to arrive at monitoring stations.
而慢纵波的速度则和孔隙度和流体的密度成正比。
And the velocity of slow compressional-wave (P-wave) is in direct proportion to the porosity and the density of fluid.
试验结果表明，以上因素都不会对超声波纵波检测产生很大影响。
The test results indicate that the above factors do not have much effect on ultrasonic longitudinal wave testing.
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。
This paper deduces the errors sources from the process of ultrasonic longitudinal wave testing and evaluates its uncertainty.
提出用低频超声类兰姆波定征方法来估计超薄双层胶结复合结构各层的纵波声速、横波声速、厚度和密度等参数。
A low frequency ultrasonic (Lamb like) wave method is used for characterizing the shear, longitudinal wave velocities, the thickness, and the density of ultra thin two layered bonding composite.
提出了用低频多模式超声兰姆波定征方法来估计超薄弹性层的纵波声速、横波声速、厚度和密度等参数。
A low frequency multi mode ultrasonic Lamb wave method suitable for characterizing shear and longitudinal wave velocities, thickness and density of ultra thin elastic layers is presented.
文章还统计了纵波和横波、岩体波速和岩石波速的关系，可供选用指标时参考。
The relations between the longitudinal and transversal waves, the wave velocities of rock mass and rock were also described in it.
爆炸震源的地震纵波是脉冲性质的。周期振动是地震脉冲引起的次生振动。
A primary seismic wave from an explosive source is a pulse response, and its periodic vibration originates from seismic pulses.
在仅考虑纵波传播的情况下，寻出了撞击力-压入位移关系。
The relationships between dynamic contact force and indentation are derived in the case of longitudinal wave propagation.
激发出泥浆纵波而使接收器获得讯号的是滑行集散波，纵波声束并不直接激发泥浆纵波。
It is the gliding irrotational wave pair, not the longitudinal wave beam itself that excites longitudinal wave in mud to generate signal.
介绍了两种常用的材料薄层超声表征方法———纵波脉冲回波法和兰姆波法。
This paper introduces two methods of ultrasonic characterization of thin layers: longitudinal pulse-echo and Lamb waves.
为了探测yc地区裂隙型储层特征，在该区进行了纵波源三分量数据采集。
Three component data acquisition with compressional wave source was applied to YC area for predicting fracture reservoir characters.
滑行纵波系由纵波声束、负指数滑行集散波和正指数滑行集散波三种成份所组成。
The gliding longitudinal wave contains three parts, longitudinal wave beam, negative exponential gliding ivro-tational wave and positive exponential gliding irrotational wave.
依据所建立的非线性模型，获得垂直入射纵波在非线性法向变形节理处传播的透射和反射系数的解析解。
Based on the established model, the analytic resolution of transmitted and reflected coefficients is obtained when the normal incident P-wave propagates to the nonlinear normal deformative joint.
理论上，多波勘探肯定优于单纯的纵波勘探。
Theoretically multi-wave exploration is certainly superior to pure P-wave exploration.
以纵波形式借由固体、液体或气体传播的物理扰动。声波是由振动的物体产生。
Mechanical disturbance that propagates as a longitudinal wave through a solid, liquid, or gas. A sound wave is generated by a vibrating object.
我们收集了渤中凹陷一条剖面的纵波速度资料。
The basic field data are P-wave velocity values collected along a seismic profile conducted in the Bozhong Depression.
但前进中的纵波声束不断向表面扩散而产生出新生的滑行集散波。
Yet the advancing longitudinal wave beam expands continuously towards the surface, and produces new gliding irrotational waves with it.
通过求解弹簧中纵波的波动方程，讨论了弹簧质量对振子的振动频率及弹簧劲度系数的影响。
The effect of spring mass on oscillation frequency and elastic constant is discussed by solving the wave equation.
结果表明，纵波速度与变形能系数关联度最大，纵波速度能较好地反映冻土的爆破性。
The results show that the longitudinal wave velocity is closely correlated to strain energy factor and exhibits the blastability of frozen soil.
提出用低频超声类兰姆波定征方法来估计超薄黏结复合结构各层与黏结层的厚度、密度、纵波声速和横波声速等参数。
A low frequency ultrasonic Lamb like wave method suitable for characterizing the thickness, density, shear and longitudinal wave velocities of the ultra thin bonding composite is presented.
滑行集散波由于激发泥浆纵波而受到的损耗，要由纵波声束给以补充。
The energy loss of the gliding irrotational wave pair is made up by the longitudinal wave beam.
此外，峰值应力与纵波波速、峰值应变与纵波波速的关系依赖于不同的岩石而表现出不同的规律。
Furthermore, the relationship among longitudinal wave velocity, peak stress and peak strain present different laws according to the types of rocks.
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