One of them is the sound standing wave resonance of fluid in cavity, the frequencies of which are invariable as velocity of flow is increasing.
经过分析，发现突出试验段壁上的流线型腔与突出的矩形腔在气流中被激振荡相似，存在着其频率与流速无关的腔中液体声共振谱峰；
I was standing by the back corner of the truck, struggling to fight back the sudden wave of emotion the snow chains had brought on, when I heardan odd sound.
我站在卡车后面的一个角落里，努力的和突然来自这防滑链带来的情感斗争着，直到我听到了一个奇怪的声音。
Methods Use a standing wave tube to measure the sound absorption coefficient of many kinds of grain.
采用驻波管法测量了多种粮食的吸声系数。
This article research content and research results mainly includes following parts: Phononic crystals new sound insulating material standing wave tube test modelling.
本文主要研究内容及成果如下：声子晶体新型隔声材料驻波管测试建模。
In standing wave method, the sound is not perfect standing wave, so the swing is not zero at wave knot.
驻波法中形成的声场不是理想驻波场，且波节处振幅不为零。
Nonlinear sound wave propagation is solved rigorously for progressive and standing waves and applied to composite tubes including thermoacoustic stacks with temperature gradient.
本文中给了非线性行波和驻波的严格解，并用于包括热声堆和温度梯度的复合管中。
The measurement of sound speed in the air is studied in the experiment by phase comparison method and standing wave method.
通过实验，应用相位比较法和驻波法对空气中的声速测量进行了研究。
So if you're standing in front of the ultrasonic sound wave, you can hear the sound.
所以如果你站在超音速声波的前面，你能听到声音。
The wave form of flame standing wave produced by gas using sound field is studied, it is found that flame appears at wave nodes (fixed reflection end), and hardly appears at wave abdomen.
对通过声场使可燃气体产生火焰驻波的波形进行研究，得出火焰驻波在波节处(固定反射端)出现火焰，在波腹处几乎不出现火焰的结论，理论分析与实验观测相符。
The sound absorption coefficient of the material was tested by standing wave tube method.
采用驻波管法测试材料的吸声系数。
The sound absorption coefficient of the material was tested by standing wave tube method.
采用驻波管法测试材料的吸声系数。
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