They probably realized that sound was a wave propagating through the air and may have had a notion of the compressibility of air during sound propagation.
他们可能意识到声音是通过空气传播的波，并可能有声音传播时空气压缩的概念。
Deflagration is combustion wave propagating at a velocity less than the speed of sound.
爆燃过程是一种以低于音速而传播的燃烧波。
By applying a matrix approach, the stress wave propagating in an elastic bar is studied.
应用矩阵方法，研究了应力波在弹性杆形部件中的传输特性。
And low permeability reservoir is slower than mid-high permeability reservoir in pressure wave propagating velocity.
低渗透油藏比中高渗透油藏的压力波传播速度慢。
The paper analyses the stress wave propagating in a variable section bar using HONDO finite element computer program .
利用HONDO有限元程序对应力波在变截面杆中的传播进行了分析。
Consider a sound wave propagating through a stagnant gas with velocity a, as sketched in Fig. 8.4a.
假设声波在气体中以速度a在静止气体中传播，如图8.4 a所示。
This method describes seismic wave propagating more accurately than others which are based on linear model of layered medium.
这种方法和以层状介质线性模型为基础的求解波场的其它方法相比较，能更精确的反映地震波的传播情况。
A general expression of the scintillation index is proposed for optical wave propagating in turbulent atmosphere under arbitrary fluctuation conditions.
提出了任意起伏条件下湍流大气中光波闪烁方差的通用表达式。
According to stochastic characteristics of electromagnetic wave propagating in wireless channels, stochastic rays are employed to model electromagnetic wave propagation.
根据电磁波在无线信道中传播的随机特性，使用随机射线建模电磁波传播。
When a radio wave propagating in one medium impinges upon another medium having different electrical properties, the wave is partially reflected and partially transmitted.
电波在不同性质的介质交界处，会有一部分发生反射，一部分通过。
Numerical modeling results for seismic wave propagating in rocks with random dis- tributed fractures using a staggered high-order finite-difference (SHOFD) are also presented.
最后，利用高阶的交错网格有限差分方法，我们模拟了地震波在具有随机分布裂缝岩石中的传播特征。
A numerical algorithm is set up for the retrieval of optical turbulence spectrum from high-frequency temporal spectra of a light wave propagating through a turbulent atmosphere.
建立了一种数值算法，从光波在湍流大气中传播的闪烁时间频谱的高频特征反演大气光学湍流谱。
Stress wave propagating in elastic structures under impact or explosive loading is a very difficult problem analytically. But the problem could be analysed by dynamic photoelasticity.
爆破与高速冲击载荷产生的应力波在弹性结构物中的传播，在理论分析上极为困难，但这类问题可以用动态光弹性法进行分析。
The test results show that the absorbing performance of the modified algorithm is better than that of the original one, especially in case of wave propagating at large incident angle.
实验结果表明，改进算法在吸收性能上有较大提高，特别是对于大角入射的情况。
The physical fundamentals of electromagnetic wave imaging logging in multiphase flow deal with the wave propagating characteristics and the fluid electromagnetic properties in oil wells.
研究多相流动电磁波成像测井要涉及到两个物理基础问题：一是油井中电磁波的传播特性，二是油井中流体介质的电磁性质。
The physical fundamentals of electromagnetic wave imaging logging in multiphase flow deal with the wave propagating characteristics and the fluid electromagnetic properties in oil wells.
研究多相流动电磁波成像测井要涉及到两个物理基础问题：一是油井中电磁波的传播特性，二是油井中流体介质的电磁性质。
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