rarefaction
英
美
网络 稀薄; 稀少; 疏部; 稀松; 稀释
复数：rarefactions
COCA.44462
英英释义
noun
- a decrease in the density of something
- 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。 - After gaseous detonation reflects on the right wall, the right-traveling rarefaction waves accelerate the reflected shock.
气相爆轰波在右壁面反射后，右行稀疏波加速反射激波。 - 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。 - Vibration analysis of rarefaction wave launch device in moving mass
移动质量作用下膨胀波发射装置的振动响应分析 - After discuss-ing the conditions under which this approximation could be used, it is applied to study various 1-dimensional flows: continuous flows, rarefaction, compression waves and shock waves.
在讨论了这种近似的适用条件后，分别用它就一维流的情况研究了连续流、稀疏波和压缩波以及激波等运动形态。 - 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。 - The secondary flow field includes complex vortices and shockwave series. It also has interaction by the boundary layer and shockwave, free shearing layer, shockwave, rarefaction wave and heavy gauge separation.
二次喷射流场包含复杂的涡系结构和波系结构，还存在着边界层与激波的相互干扰、自由剪切层、激波、膨胀波和大尺寸分离。 - And also the model can catch the shock wave and rarefaction wave which exist in traffic. 2.
此模型能够合理反映交通中存在的激波和疏散波。 - Numerical results show that the model can correctly simulate how shock waves accumulate and how rarefaction waves dissipate.
数值计算表明，该模型可以很好地模拟冲击波的聚积和稀疏波的消散现象。 - Experimental Study on Applying VEGF for Preventing and Curing Bone Rarefaction after Serious Limbs Crush Injury
应用VEGF防治肢体严重创伤后骨质疏松的实验研究