论文部分内容阅读
DVD后面的编号是什么意义?为什么只有5、9、10和18?原来,DVD后面的编号是表明DVD光盘容量的大小,且只有四个。
Why is the number behind the DVD? Why only 5,9,10 and 18? It turns out that the number behind the DVD is the size of the DVD disc, and only four.