“perceived noise decibel”的概念、定义、翻译、参考文献-科学参考

单词	perceived noise decibel
释义	perceived noise decibel [pǝr`sēvd ¦nȯiz `des·ǝ´bel] ^ACOUSTICS A unit of perceived noise level. Abbreviated PNdB.
随便看	Delaborne prism delafossite Delambre analogies delamination de la Rue and Miller's law de la Tour method Delaunay orbit element de Laval nozzle de Lavaud process delay delay-action detonator delay allowance delay blasting cap delay circuit delay counter delay distortion delay Doppler mapping delayed action bomb delayed action mine delayed alpha particle delayed automatic gain control delayed automatic volume control delayed coincidence delayed coking delayed combustion

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