The theory can be applied to CD, CD? ROM, WORM , MOD and other optical disk storage systems.

该理论分析及结论广泛适用于CD, CD? ROM, WORM, MOD及其光盘存储系统.

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However, because the method requires hard - disk or optical - disk storage, it is more expensive than magnetic tape.

然而, 由于该方法需要硬盘或光盘存储, 它是昂贵得多磁带.

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