在双通道示波器上可直观地观测拍现象，并利用拍振动曲线测量交流电的频率。
The phenomenon of beats can be observed directly on the double-channel oscillograph and the frequency of alternating current can be measured by the vibration curve of the beats.
摘要文章借助计算机，通过编制程序，使拍振动与阻尼振动成为可视化，把振动直观地描绘出来。
With the help of a computer this artcle makes it possible for the vibration of pats and the damped oscillation to be visualiazed and demonstrated directly by making corresponding program.
比如，当两个相近的音符同时响起时，会有一种让声音在强弱之间振动的干涉效应，使之形成一个“拍”。
For instance, when two very similar musical notes are played together, there's an interference effect that causes the sound to wobble between loud and soft, producing "beats."
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