The paper puts forward a convenient and efficient method on the analysis of vibration natural frequency for ring ultrasonic wave motor stator.

本文提出了一种用于分析环形超声波电动机定子振动固有频率的简便、有效的方法。

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He is also reported to have experimented with the relationship between consonance and the natural frequencies of vibration of stretched strings, pipes, shells, and filled vessels.

据说他还对紧绷的弦，管子，贝壳和满载的船的固有振动频率进行了测试。

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That high, pure, fast vibration is what is most natural to you.

这种高的，纯的，快速的振动就是你最自然的状态。

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The structure of the unit is fortified thoroughly to prevent distortion and vibration, so music is reproduced with natural highs and thunderous lows.

ENGADGET: Altec Lansing Live 5000 WiFi music system makes its debut, plays nice with Android and iOS (ears-on)