声音其实是经媒介传递的快速压力变化.当声音於空气中传递,大气压力会循环变化.
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![声音其实是经媒介传递的快速压力变化.当声音於空气中传递,大气压力会循环变化.](/uploads/image/z/2438646-6-6.jpg?t=%E5%A3%B0%E9%9F%B3%E5%85%B6%E5%AE%9E%E6%98%AF%E7%BB%8F%E5%AA%92%E4%BB%8B%E4%BC%A0%E9%80%92%E7%9A%84%E5%BF%AB%E9%80%9F%E5%8E%8B%E5%8A%9B%E5%8F%98%E5%8C%96.%E5%BD%93%E5%A3%B0%E9%9F%B3%E6%96%BC%E7%A9%BA%E6%B0%94%E4%B8%AD%E4%BC%A0%E9%80%92%2C%E5%A4%A7%E6%B0%94%E5%8E%8B%E5%8A%9B%E4%BC%9A%E5%BE%AA%E7%8E%AF%E5%8F%98%E5%8C%96.)
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