結果 : sound level definition physics
3:54

What is Sound? | The Dr. Binocs Show | Learn Videos For Kids

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Lesson 12 - Sound Intensity And Sound Level

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What Is A Decibel? Can 'Negative' Decibels Exist?

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Sound Intensity and Decibels Distinctly Defined, Dude | Doc Physics

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Calculate the Intensity When dB (Decibel) Value is Given

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