We want a well-defined set of properties for each type of node.

我们需要为每种节点类型提供一组定义良好的属性。

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Each node can contain some identifying data, plus a set of subnodes of a specific child type.

每个节点可以包含一些标识数据，以及一组特定子类型的子节点。

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Each of those characters is read by the XML parser as a TEXT type node.

xml解析器将读取所有这些字符，并将其作为一个text类型的节点。

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And, in fact, these are the only two types of nodes that we're going to be describing, so we can actually calculate both the total number of notes and the number of each type of node we should expect to see in any type of orbital.

事实上，我们只,描述这两种节点，所以我们可以,计算任何轨道中的,总结点数以及各种节点数。

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