数
![](https://www.godic.net/tmp/wordimg/i89x91tBBJvFG@Jcw0qj2WZGh@Y=.png)
![](https://www.godic.net/tmp/wordimg/XXXqP@59@@7TGjJQ7ZN8mThIZDsw=.png)
功能光碟。数
![](https://www.godic.net/tmp/wordimg/i89x91tBBJvFG@Jcw0qj2WZGh@Y=.png)
![](https://www.godic.net/tmp/wordimg/XXXqP@59@@7TGjJQ7ZN8mThIZDsw=.png)
![](https://www.godic.net/tmp/wordimg/zwFYoE99@Jcu4W6rb6cSgbDnXvU=.png)
途光盘。DVD盘片直径为80mm或120mm。DVD的最小凹坑长度仅为0.4μm。道间距为0.74μm。采
![](https://www.godic.net/tmp/wordimg/zwFYoE99@Jcu4W6rb6cSgbDnXvU=.png)
波长为635~650nm的红外激光器
![](https://www.godic.net/tmp/wordimg/x7LRLlmBeQNzBLb3UXIZDShucDw=.png)
取数据。DVD-ROM的1X是1358KB/s。等于 CD-ROM 9.053X。
DVD在标准确认之初的全名为Digital Video Disc。因DVD的涵盖规模已超过当初设定的视
![](https://www.godic.net/tmp/wordimg/CsmbfJjdrNs09xx6B9Cd7ZD80u0=.png)
![](https://www.godic.net/tmp/wordimg/Ub7c9dxCNWE8vi7wWGMZMrWJdvs=.png)
![](https://www.godic.net/tmp/wordimg/mg6f2jdZUuF3cyO6c@@2kdIhRcNA=.png)
的范围。因此后来又有人提出了新的名称:Digital Versatile Disc。意即
![](https://www.godic.net/tmp/wordimg/zwFYoE99@Jcu4W6rb6cSgbDnXvU=.png)
途广泛的数
![](https://www.godic.net/tmp/wordimg/i89x91tBBJvFG@Jcw0qj2WZGh@Y=.png)
化储存光碟媒体。它集计算机技术、光学记录
德 语 助 手