数字多功能光碟。数字多用途光盘。DVD盘片直径为80mm或120mm。DVD
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最小凹坑长度仅为0.4μm。道间距为0.74μm。采用波长为635~650nm
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红外激光器
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取数据。DVD-ROM
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1X是1358KB/s。等于 CD-ROM 9.053X。
DVD在标准确认之初
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全名为Digital Video Disc。因DVD
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涵盖规模已超过当初设定
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视频播映
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范围。因此后来又有人提出
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名称:Digital Versatile Disc。意即用途广泛
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数字化储存光碟媒体。它集计算机技术、光学记录
德 语 助 手