The size of a block is typically a multiple of the size of a physical record.

区块的大小通常是实体记录大小的倍数。

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In order to give such a file a common physical record length, short logical records are typically "padded" with blanks so that they will all be the same physical record length.

为了让这种档案有一个相同的实体记录长度，短的逻辑记录会用空白填补，因此他们的实体记录长度相同。

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In order to give such a file a common physical record length, short logical records are typically "padded" with blanks so that they will all be the same physical record length.

为了让这种档案有一个相同的实体记录长度，短的逻辑记录会用空白填补，因此他们的实体记录长度相同。

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