《infrasound.doc》查看内容详情
亲，网页上所展示的文章内容和下载文档内容是一致的，下载前请点击“查看内容详情”确认是否您所要下载的内容。
n.次声（风暴产生的低频音波）； 英英释义： InfrasoundInfrasound, sometimes referred to as low-frequency sound, is sound that is lower in frequency than 20 Hz (Hertz) or cycles per second, the "normal"limit of human hearing. Hearing becomes gradually less sensitive as frequen
