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."
实验结果表明，不同的钻头选型将直接影响钻柱振动的强弱，采用合适的钻头型号将减轻井下事故的产生。
The experiment is made which simulates drilled rock by two kind of cone bits. The result shows that different bits cause the vibration …
拢流片振动频率，对分离涡的尺度、强弱、成对、合并过程有重要影响。
The test results show that the scale, intensity, pairing and merging of the vortices depend, to a large extent, on the forced oscillation frequencies of the spoiler.
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