利用弯曲振动试验、纵波传播试验、纵波共振试验测定刨花板的动态抗弯弹性模量。

The dynamic deflection moduli of particleboard were measured by flexural vibration. longitudinal transmission and longitudinal resonant vibration.

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.

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.

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.

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.