A collection of contiguous records recorded as a unit.Blocks are separated by interblock gaps and each block may contain one or more records.
作为一个单位来记录
记录集合。各块
块间间隙分开，而每块可以
含一个或多个记录。
A collection of contiguous records recorded as a unit.Blocks are separated by interblock gaps and each block may contain one or more records.
作为一个单位来记录记录集合。各块块间间隙分开，而每块可以含一个或多个记录。
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