声音：以纵波形式藉由固体、液体或气体传播的物理扰动。
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。
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。
当前国内外检测混凝土建筑物上的裂缝是应用超声纵波或脉冲波，利用绕射法进行检测。
1·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。
2·The test results indicate that the above factors do not have much effect on ultrasonic longitudinal wave testing.
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。
3·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。
4·Then the fitting relationships between the longitudinal wave velocity of rock masses and deformation moduli are established. Method of least square regression is used for deformation data processing.
用刚性圆形承压板法进行岩体变形试验，建立了岩体纵波波速与变形模量的拟合关系，用最小二乘回归法处理变形数据。
5·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。