“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	Berytidae berzelianite Bessel ellipsoid of 1841 Bessel equation Bessel function Besselian elements Besselian star numbers Besselian year Bessel inequality Bessel spheroid of 1841 Bessel transform Bessemer converter Bessemer iron Bessemer matte Bessemer ore Bessemer pig iron Bessemer process Bessemer steel Bessey unit embryotomy Emden equation Emden function emerald emerald cut emerged bog

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