Sone
[sәun]
解释:
(noun.) a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold.
录入:雷内--From WordNet
[sәun]
(noun.) a unit of perceived loudness equal to the loudness of a 1000-hertz tone at 40 dB above threshold.
录入:雷内--From WordNet