波的传播

Whenever a wave moves out from a source in uniform medium, it travels in straight lines.

每当波从均匀介质中的波源移出时，它都呈现直线传播。

Therefore, stress wave velocity can be used as a testing index of nondestructiveevaluation in-place.

因此，在某些情况下可以考虑用应力波传播速度作为木材无损评价的一个指标。

In this article we only analyze and report the precursor wave from the epicentral area, especially the characteristics of its propagation.

本文将主要分析报道来自震源区的这种前兆波，特别是其传播特性。

According to the Stress Wave Theory on explosive exploding propagating in the rock, it builds up mathematical model of fractural ranges in the rock, and carry out actual calculation and analysis on fractural range of bench shooting in deep-hole.

根据炸药爆炸在岩石中传播的应力波理论，建立岩石爆破破裂范围数学模型，并对深孔梯段爆破破裂范围进行了实行计算分析，计算结果为：混装乳化炸药岩石深孔梯段爆破侧向底部破裂范围为1.9m。

Peng Bo still points out, phonic video also is this the marked characteristic of transmission providing disaster relief.

彭波还指出，音视频也是这次救灾传播的显著特点。

Finally, considering the bottom friction effects, the corresponding numerical calculations for the wave shoaling on different slopes as mentioned above is conducted, again.

最后在计及底部能量损耗时，对不同坡度上的规则波传播与变形进行计算。

Boussinesq type equations, can be used to simulate the nonlinear transformation of surface waves due to the effects of shoaling, refraction, diffraction, reflection and nonlinear action so on.

Bousinesq方程能够用于模拟表面重力波传播过程中的折射、绕射、反射以及浅化，非线性作用等现象。

This dissertation reviews the development of the propagation of gravity waves in mesosphere.

本文首先介绍了重力波在中层大气中传播问题的研究现状。

Based on the wave equation, this paper describes the underwater acoustic propagation by a wave guide model,and computes the model.

文摘：通过求解波动方程建立了水声在波导中传播的模型并进行了仿真计算。

Based on the wave equation, this paper describes the underwater acoustic propagation by a wave guide model, and computes the model.

通过求解波动方程建立了水声在波导中传播的模型并进行了仿真计算。

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％。