购买 What Are the Methods for Measuring Sound

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购买 What Are the Methods for Measuring Sound

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$19.99
Noise Decibel Meter, Gedaye Digital Sound Level Meter & Thermometer, SPL Meter 35 To 135Dba Range, LCD Backlit Display, A-Weighting, Max/Min
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Noise Decibel Meter, Gedaye Digital Sound Level Meter & Thermometer, SPL Meter 35 To 135Dba Range, LCD Backlit Display, A-Weighting, Max/Min
Amazon.com
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Decibel Meter Recorder 13 Inches Sound Level Meter, Wall Mount Noise Meter For Classroom Sound Meter With 16.4ft Sensor, Buzzer Alarm And Unlimited
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