| 单词 | 纯音 |
| 释义 | 〔sone〕A subjective unit of loudness, as perceived by a person with normal hearing, equal to the loudness of a pure tone having a frequency of 1,000 hertz at 40 decibels.宋：一种声音的主观单位，如某人正常听力所感觉到的，等于40分贝时为1,000赫兹的无泛音的纯音的高度 |
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