每种特性都为分组表中的数据提供了独特的方法，并对解决与事实表或历史表相关的需求有独特的作用。
Each feature provides a distinct approach to grouping data in a table and provides a unique contribution to addressing needs related to large fact or history tables.
在无线电噪声环境里，利用基于每秒1600跳跳频表的分组交换协议可以提高系统性能。
Uses packet switching protocol based on frequency hop scheme with 1600 hops/s to enable high performance in noisy radio environments .
组表容纳关于用户分组的信息。
The groups table holds information about which groups each user is a part of.
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