单组概念—一个组是层次结构中的一个节点,惟一目的是创建一个对信息分类或封装信息的结构。
Single group concept - a group is a node in the hierarchy whose only purpose is to create a structure that categorizes or encapsulates information.
XPath 2.0引入了序列的概念,序列是一种有序列表,可以包含零个或多个值—节点、整数、字符串等等。
XPath 2.0 introduces the concept of a sequence, which is an ordered list of zero or more values - nodes, integers, strings, and so on.
尽管这是一个集群概念,但是应该在所有节点上实现它:单独的节点、虚拟化节点和集群节点。
Even though this is a cluster concept, it should be implemented on all nodes: standalone, virtualized, or clustered.
They're pretty straight forward to do and it gives us an idea what kind of nodal structure we can expect it an orbital.
这个对我们来说很明显,而且让我们对,预计是哪类节点有个概念。
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