单词subaudible
adj.: 〔物〕亚声频的网络: 刚刚听见的;次声的;次声频的
〔物〕亚声频的,可听频率以下的
The subaudible electron-magnetic radiation has been detected by four Canadian scientists.
刚刚听见的电磁辐射已被四位加拿大科学家测出了。