The low points in the waveform are called rarefactions, and they are where the air particles are more spread out and not bouncing around as much, and thus have a lower pressure.
波形中的低点称为稀疏点,此处的空气粒子更加分散, 不会反弹太多,因此压力较低。
单词 | rarefaction |
释义 |
rarefaction
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