与"attenuation of the first heart sound"相近的词条

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• attenuation measure device
• attenuation measurement
• attenuation measuring device
• attenuation of beam
• attenuation of sound
• attenuation of the first heart sound
• attenuation of virulence
• attenuation pad
• attenuation parameter
• attenuation range
• attenuation rate
• attenuation ratio
• attenuation step pilot lamp
• attenuation unit
• attenuation value
• attenuationcoefficient

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