根据这些个信息，控制系统可以向盘片驱动系统发送提速或降速的指令。
With this information, control can send speed up or slow down commands to the disc drive motor.
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.
盘片上存储的宝贵信息，你可以看到在图片顶部盘片。
Precious information stored on platters, you can see top platter on the picture.
盘片上存储的宝贵信息，你可以看到在图片顶部盘片。
Precious information stored on platters, you can see top platter on the picture.
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