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日本松下公司现开发出一种DVD大小的读写光盘。该光盘以 25Mbit/s的记录速度可存储4个多小时的数字式高清晰度视频移动图像。它是采
Japan’s Matsushita is developing a DVD-size read-write disc. The disc with 25Mbit / s recording speed can store more than 4 hours of digital high-definition video moving images. It is mining