Each entry in the free space list then consists of a disk address and a count.
空闲空间列表的每个条目由一个磁盘地址和一个计数组成。
Given a relative record number, it is possible to compute a physical disk address.
就可计算出磁盘上的一个物理地址。
Given a relative record number, it is possible to compute a physical disk address.
就可计算出磁盘上的一个物理地址。
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