当前栅格数据集的范围 IEnvelope extentrasterProps.Extent
度量分散情况：分散情况向我们提供了范围，或者给定数据集内数据扩散情况的度量手段。
Measuring the dispersion: the dispersion gives us a measure of the range, or spread of data within a given dataset.
数据分区也称为范围(当前DB 2只支持范围分区方案)，一个数据分区包含一个行子集，这些行存储在与表中其他行集不同的地方。
A data partition, also referred to as a range (currently DB2 supports only a range partitioning scheme), contains a subset of rows that are stored separately from other sets of rows in the table.
虽然他们需要将软件测试范围拓展到更广的数据集，但这的确是一项让人印象深刻的工作，对打击水军迈出了第一步。
That's an impressive piece of work and a good first step towards combating this problem, although they'll need to test it on a much wider range of datasets.
应用推荐