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bels 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/bel/,
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bels, plural;
  1. A unit used in the comparison of power levels in electrical communication or of intensities of sound, corresponding to an intensity ratio of 10 to 1


  1. A-weighted sound power level is expressed in bels. A-weighted decibels, abbreviated dBA, or dBa, or dB(a), are an expression of the relative loudness of sounds in air as perceived by the human ear. ...
  2. Vincent L. (2006). Feeding in Domestic Vertebrates: From Structure to Behaviour CABI Publishing, 136. ISBN 1845930630.