这一次，单位不是像素，而是相对权重，它们的相对份额被用于扩展或缩小列和行(参见其他注意)。

This time the units are not pixels, but rather relative weights whose relative quotients are used for expanding the columns and rows or inversely shrinking them (see miscellaneous notes).

youdao

第一个参数（1000）以米为单位指定网格单元格大小，因为米是与 location 列相关联的 SRS 的直线单位。

The first parameter (1000) specifies the grid cell size in meters, because that is the linear unit of the SRS associated with the location column.

youdao

unitid列标识包含部门的单位(一个单位可能包含多个部门)，deptdoc列包含一个列出部门中的员工的XML文档。

The unitID column identifies the unit containing the department (a unit may contain multiple departments), and the deptdoc column contains an XML document listing the employees in the department.

youdao