... 实体记录删除 physical record deletion 实体记录长度 physical record length 实体记录器定位 physical recorder positioning ...
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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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