logical record length的意思|示意

Typically, logical record length format is more space-efficient than card image.

逻辑记录长度格式档案的一个特色就是比卡片格式档案来得节省空间。

The length, in bytes (i. e. , columns ), of a logical and physical record in a logical record length formatted file.

逻辑记录长度格式档案中每个逻辑与实体记录长度，以字节（即字段）为单位。

Thus, when the data for each case or unit of analysis is stored in a single physical record, the file structure is called "logical record length."

所以当每笔数据或是每一分析单位被储存在一笔实体记录时这种档案结构就称为”逻辑记录长度”。

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。