释义 |
宋2sòng响度单位。1宋等于1,000毫宋,约相当于人耳刚能听到的声音响度的一千倍。{sone; equal to 1,000 millisones; subjective unit of loudness for an average listener, equal to the volume of one kilohertz at 40 decibels above the listener's own threshold of hearing;}旧作{written as}。{in old times}[英 sone] |