| 释义 |
〔infrasound〕A wave phenomenon sharing the physical nature of sound but with a range of frequencies below that of human hearing.次声:一种波现象,它有声音的物理特性和频率又在人耳的听力范围之内〔infrasonic〕Generating or using waves or vibrations with frequencies below that of audible sound.次声的:产生或使用频率低于人耳能听见的声音的波或振动的 |