rarefaction

英

美

网络  稀薄; 稀少; 疏部; 稀松; 稀释

复数：rarefactions　

GRE医学

COCA.44462

英英释义

noun

• a decrease in the density of something
  1. a sound wave causes periodic rarefactions in its medium

双语例句

• In the situation of shock wave, the interaction caused by the situation of one shock wave catching up with another is qualitatively analyzed with the result of the wave form: reflection rarefaction and incidence shock wave.
  对急流冲击波的情况，从定性的角度分析了一个冲击波追赶上另一个冲击波后的相互作用，得到可能产生的波形，即反射的稀疏波和入射的冲击波。
• It carefully investigates thought background of proposing zero measure set, thought process of proposing asymptotic measure and rarefaction of proposing zero measure set, and influences on M.
  以法国数学家波莱尔的有关工作为核心，重点考察了他提出零测集的思想背景，提出零测集渐近测度和稀疏度的思想演变过程、思想方法及影响。
• Computation and Simulation of Rarefaction Wave Velocity and Travel in Inertial Breech RAVEN
  惯性炮尾式膨胀波火炮膨胀波速度和行程计算仿真
• Analysis of Capturing Calculation of Propagation Law about Rarefaction Wave in Gun
  膨胀波在火炮膛内传播规律的捕捉计算分析
• Interior Ballistic Study and Launch Dynamic Analysis about Rarefaction Wave Propulsion Technology
  基于膨胀波发射技术的火炮内弹道与发射动力学分析
• The formulas of both reflection shock waves and rarefaction waves are given.
  文中分别给出反射冲击波和反射稀疏波两种情况的迭代收敛计算公式。
• Influences of plasma shielding and rarefaction wave on impulse coupling coefficient
  等离子体屏蔽和稀疏波对冲量耦合系数的影响
• Processes of the unsteady transient phase transformation of water vapor and gas mixture induced by rarefaction waves and reflected rarefaction waves in a shock tube were studied experimentally.
  本文研究了激波管中稀疏波、反射稀疏波对水汽－空气混合气体作用的非定常瞬态相变过程。
• Steady characteristics of Micro Gas Journal Bearings Based on Rarefaction effect
  基于稀薄效应的微气体径向轴承稳态性能
• The results show that the rarefaction wave influences the premixed flame structure and propagation greatly.
  研究发现稀疏波对火焰结构和火焰传播过程产生重要影响。