瓜子资源为您提供Sound Mirrors,在线点播,迅雷下载。
Dean filmed huge concrete, curved structures built in Dungeness in the UK, which date back to the 1920s. They were constructed as a pre-radar sound tracking ******, where the curved concrete structures gathered sound which were listened to by people with a sort of stethoscope, the aim of which was to give warning of hostile aircraft attacks. Since it was impossible to distingui...
瓜子资源用心做网站,真诚到永远。本视频内容来自第三方网站,其版权归合作网站或第三方网站所有!