赫兹频率的单位
A unit of frequency in Hertz
以上为机器翻译结果，长、整句建议使用 人工翻译 。
物体发声时振动的次数叫做频率，计量单位是赫兹。
The number of vibrations an object makes while it's making a sound is called its frequency, which is measured in Hertz.
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