Those vibrations result in the compression and rarefaction of the surrounding air.

这些振动会导致周遭空气被压缩及稀少。

Objective:For observation and treatment of diabetes followed by rarefaction of bone.

目的：观察和治疗糖尿病伴随骨质疏松。

The results show that the rarefaction wave influences the premixed flame structure and propagation greatly.

实验过程中，通过不同的点火方案诱导出不同传播方向的稀疏波与火焰发生干涉作用。

He believed that the changes things undergo could be explained in terms of rarefaction and condensation of air.

他相信物质的改变可以被解释为一系列的气体的稀释和浓缩。

The classical elementary waves in Riemann solutions include rarefaction wave, shock wave and contact discontinuity.

黎曼解涉及的经典基本波包括疏散波 、 激波和接触间断.

The rarefaction wave immediately behind shockwave decompressed the shattered rock and threw them along with jet current.

紧接着冲击波后面形成的稀疏波使压碎的岩石减压并随喷射流（气浪）抛出。

Shannon-Wiener index and Pielou evenness index were used to compare and check the feasibility of rarefaction in practice.

多样性指数之间的比较，需要样方的面积大小相等，否则没有实际意义。

Simulations show that Kn is a key parameter in determining the magnitude of rarefaction effects while Re is a key parameter indicating the thermal creep.

计算表明，努森数是表征稀薄效应的特征参数，而热蠕动效应的强弱依赖于雷诺数。

Several applications require consideration of rarefaction , which motivates the present thesis to focus on simulation of driven cavity flows in this region.

因此本文的动机是模拟空穴流场在稀薄区域上的应用。

The net effect on the pressure distribution is maximum pressure amplitude at points of maximum compression and minimum pressure at points of maximum rarefaction.

气压分布的有效效应是最大气压变化幅度在最大压缩点和最小压力在最大稀薄点。