So the frequency for this magnesium bar is about 2,100 Hertz, and you can hear that.
所以镁条的频率是，大概2100赫兹，你可以听到。
The length of the bar is about 122 centimeters, and so that translates into a frequency of roughly 2,200, 2,100 hertz.
条的长度大概是,122厘米，转换成频率就是,大概2200，2100赫兹。
The length of the bar is about 122 centimeters, and so that translates into a frequency of roughly 2,200, 2,100 hertz.
条的长度大概是,122厘米，转换成频率就是,大概2200，2100赫兹。
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