however, the relationship among longitudinal wave velocity, young「s modulus and peak stress presented different variation according to the type of rock.

而纵波波速与弹性模量、峰值应力的关系则依赖于不同的巖石而表现出不同的规律。

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.

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 ultrasonic lamb like wave method suitable for characterizing the thickness, density, shear and longitudinal wave velocities of the ultra thin bonding composite is presented.

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。

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。

the experiment results indicted that there existed fairly good linearity between the grain sizes and longitudinal wave velocities when the measurements were done with 5p14z probe.

实验结果表明，用5p14z探头测得的纵波声速与晶粒尺寸之间有很好的线性关系。

the energy loss of the gliding irrotational wave pair is made up by the longitudinal wave beam.

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。

yet the advancing longitudinal wave beam expands continuously towards the surface, and produces new gliding irrotational waves with it.

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。

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.

通过对滩海地区含砾砂巖储层成因的分析，利用杨氏模量与纵波时差交会图法识别出巖性。

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.

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。

the gliding longitudinal wave contains three parts, longitudinal wave beam, negative exponential gliding ivro-tational wave and positive exponential gliding irrotational wave.

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 relationship between uniaxial compressive strength and the velocity of longitudinal wave of concrete material with different grading is found through laboratory testing.

通过试验得出不同级配混凝土试样的纵波波速与其单轴抗压强度的关系。

sound: mechanical disturbance that propagates as a longitudinal wave through a solid, liquid, or gas. a sound wave is generated by a vibrating object.

声音：以纵波形式藉由固体、液体或气体传播的物理扰动。声波是由振动的物体产生。

solid youngs modulus is determined by measuring the propagation speed of longitudinal wave induced by ultrasonic wave in solid media.

通过测量超声波在固体介质中传播的纵波传播速度，进一步测量该固体的杨氏模量，得到了测量固体杨氏模量的一种新方法。

the attenuation factor of longitudinal wave was changing linearly, whereas the attenuation factor of the slow shear wave kept nearly constant with a low frequency on the exploration seismic band.

纵波的衰减系数在地震频带内基本上呈线性变化，而横波的衰减系数在地震频带内除低频外基本保持稳定。

sound: mechanical disturbance that propagates as a longitudinal wave through a solid, liquid, or gas.

声音：以纵波形式藉由固体、液体或气体传播的物理扰动。

the wave forces normal to caissons decrease with wave incident angle, and the longitudinal wave forces increase with the wave incident angle when the incident wave frequency is small.

在低频入射波作用下，垂直于沉箱的水平力随角度的变大而减小，平行于沉箱排列方向的力则变大。

the relationships between dynamic contact force and indentation are derived in the case of longitudinal wave propagation.

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 cumulative effect of blasting rounds illustrates that the weaken zone lies in the crack area; and its damage is attributed to the effect of longitudinal wave and transverse wave.

而爆破循环的累积影响效应表明，弱化带位于裂隙区，其损伤是纵波和横波共同作用的结果；

it is indicated that the longitudinal wave speed, shear wave speed, as well as the dynamic young」s modulus of the mogao grottoes increase with the increasing depth of grottoes.

结果表明，洞窟巖壁的纵波波速、横波波速、动弹模随着洞深的增加而增加；

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。

theoretically, when gas exists in reservoir, longitudinal wave offset time will increase and transverse wave offset time will not change and density will decrease and neutron will decrease, too.

理论认为当储层中存在着天然气时，会导致纵波时差增大，横波时差不变，密度测井值减小，中子孔隙度减小。

the 2-d nonlinear longitudinal wave in the isotropy solid medium studied in this paper is the finite amplitude wave, which thought about the nonlinear of the motion and medium.

本文研究了各向同性固体介质中的二维非线性有限振幅纵波，采用有限元方法求解二维非线性纵波运动方程。

furthermore, the relationship among longitudinal wave velocity, peak stress and peak strain present different laws according to the types of rocks.

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巖石而表现出不同的规律。

as the s-wave transmission from the impact of fluid properties, compared to the longitudinal wave the near-surface of s-wave can reach under the water table.

横波传播不受孔隙流体性质的影响，与纵波相比，横波的近地表层可以达到潜水面以下。

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。