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What is a decibel?
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What is a Decibel and How Are they Used to Quantify Sound?
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What is a decibel and what does it measure? …
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Decibels Explained: Sound Intensity & Safety - Loop Earplugs

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Decibel Pronunciation and Meaning - YouTube
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What is Decibel - YouTube
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youtube.com > IMSAI Guy
#2001 What is a Decibel?
YouTube · IMSAI Guy · 3521 次播放 · 5 个月之前

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What is decibel | decibel Explained | Introduction to decibel HINDI URDU
YouTube · LearnEveryone · 2.8万次播放 · 2017年4月8日
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Decibels: Everything You Need to Know
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What Are Decibels? The Ultimate DB Guide For Audio Sound, 40% OFF

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