耳道生物辨識！

https://www.sciencedaily.com/releases/2019/09/190918184504.htm?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+sciencedaily%2Fmatter_energy%2Facoustics+%28Acoustics+News+--+ScienceDaily%29&fbclid=IwAR0R-1eAt6GkDRmG4wvQRNLHX737ErMNJRVO-Uox9tjPZ7KvznUa5swiD7o