Based on DTD, tree model for XML and path expressions, definitions for node value equality and node set are given.
基于DTD,XML的树模型和路径表达式，对节点的值相等和路径节点集作了定义。
Based on DTD, tree model for XML and path expressions, definitions for node value equality and node set are given.
基于DTD,XML的树模型和路径表达式，对节点的值相等和路径节点集作了定义。
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