一段128年前的录音
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| MP4 | N/A | 480P | Descargar |
| MP4 | N/A | 360P | Descargar |
| MP4 | N/A | 360P | Descargar |
| AUDIO | |||
| MP4 | N/A | mp4a.40.2 | Descargar |
| MP4 | N/A | mp4a.40.2 | Descargar |
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JPEG | Origin Image | Descargar |
Youtube,"A direct recording of Alexander Graham Bell's voice" 借助哈勃提供的技术，这张录音盘的声音终于被人类读取出来.详情:http://www.ithome.com/html/it/43569.htm
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