由于用来读写信息的磁头能很快地寻到磁盘上的任何一点，因此，磁盘上信息的存取可以直接进行。

As the head can be used to read and write messages quickly hopes of finding any point on the disk, so you can access information on the disk directly.

youdao

由于用来读写信息的磁头能很快地寻到磁盘上的任何一点，因此，磁盘上信息的存取可以直接进行。

As the head can be used to read and write messages quickly hopes of finding any point on the disk, so you can access information on the disk directly.

youdao