Disc evenly coated with a kind of very thin magnetic material, according to the specified format, it becomes a disk to save information.
盘片上均匀地涂上一种极薄的磁性材料，并按指定格式化，就成了保存信息的磁盘。
Disc evenly coated with a kind of very thin magnetic material, according to the specified format, it becomes a disk to save information.
盘片上均匀地涂上一种极薄的磁性材料，并按指定格式化，就成了保存信息的磁盘。
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