查询词典 wave velocity

There may also be an increase in the velocity of air particles in the blast wave due to precursor action.

由于前驱波的作用，爆震波中的空气粒子速度可能增加。

The angular distribution of the transmission coefficient of HH polarization are obtained by numerical implementation, the influence of the permittivity and the mean layer thickness of intermediate medium, friction velocity and the frequency of the incident wave on the transmission coefficient is discussed.

通过数值计算得到了HH极化透射系数随散射角的变化曲线，讨论了中间介质介电常数和厚度、摩擦风速和入射波频率对透射系数的影响，得到改进的一维分形分层海面透射系数的基本特征、分区特征和随频率变化的特征，结果表明透射系数近似具有"量子化"特征。

The angular distribution of the bistaticscattering coefficient of HH polarization were obtained by numerical implementation. Influences of the permittivity and the mean layer thickness of intermediate medium, friction velocity and the frequency of the incident wave on the bistatic scattering coefficient were discussed. The basic characteristics, the zonal characteristics and the characteristics with varying of frequency of the scattering coefficient from stratified sea surface were obtained. The numerical results show that the scattering coefficient has approximate "quantization" characteristics.

通过数值计算得到了HH 极化双站散射系数随散射角的变化曲线，讨论了中间介质介电常数和厚度、摩擦风速和入射波频率对双站散射系数的影响，得到改进的一维分形分层海面散射系数的基本特征、分区特征和随频率变化的特征，结果表明散射系数近似具有"量子化"特征。

The basis of this article is the application of millimeter wave radar in muzzle velocity measure of antiaircraft gun .

根据毫米波雷达在高炮测速中的实际应用，通过仿真的方法对初速测定的弹道外推问题进行了研究。

The phase velocity equations of symmetric and antisymmetric modes of Lamb wave propagation are obtained for electrical open and short cases.

当薄膜厚度与波长之比较小时，相速度减小的趋势不很明显，当薄膜厚度与波长之比较大时，相速度减小的趋势明显。

High-resolution surface wave tomographic images indicate that the velocity characteristics of the lithosphere and asthenosphere are quite similar for the same type of plates or blocks.

高分辨率地震面波层析成像，显示同一类型的板块或地块的岩石圈和软流圈的速度结构十分相似，呈现出其独有的速度分布特征。

The rules of the cold-test characteristics changing with helix pitch are also studied and it turns out that, with increasing helix pitch, the phase velocity increases linearly, the interaction impedance changes nonlinearly and the attenuation constant decreases nonlinearly. At the same time, with the limitation of the synchronism between the electron beam and the electromagnetic wave, the change of pitch is small and therefore an approximate linear relation can be introduced.

研究表明：相速几乎随螺距增大而线性变大，互作用阻抗与螺距是非线性的关系，衰减常数随螺距增大而非线性地减小；由于在维持电子注与电磁波速度同步的限制下，螺距变化的幅度不可能很大，因此可近似按线性关系来处理互作用阻抗及衰减常数与螺距之间的关系。

The average propagation velocity of the laser-induced shock wave in aluminum is 6.38×10 3m/s.

激光引发的冲击波峰值压力在铝中的衰减规律是指数型的。

The average propagation velocity of the laser-induced shock wave in stainless steel was 5.72×10^3m/s.

激光冲击波在不锈钢材料中的平均传播速度为5.72×10^3m/s，与声波纵波的传播速度一致。

The average velocity obtained by SAC method and frequency wave-number method is almost the same.

方法精度与目前国际同类研究——表面波谱分析方法的精度基本相当。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。