一种作业的分组方法，这些作业在执行时要求相同的一组资源。类别有两种：输入类和输出类。 A means of grouping jobs that require the same set of resources for their execution. There are two classes: input class and output class.
由对话控制提供的一种功能。为进行差错校正和其它目的，把信息分组后放入链中。 A facility provided in dialog control. Messages are grouped into chains for error recovery and other purposes.
分组讨论；集体努力 A group discussion; a group effort.
用来分组或分隔一个输入行上的词或值的字符。 A character that groups or separates words or values in a line of input.
