由根节点开始，并依据每个节点到其他节点的关系，向导为每个节点选择适当的模式。
The wizard selects an appropriate pattern for each node, starting from the root node and following the relationships on each node to other nodes.
和XPath 1.0相比，XPath 2.0中节点测试的语法更加一致，并在节点选择中加入了对模式敏感(schema - aware)支持。
In XPath 2.0, the syntax for node tests is more consistent than it was in XPath 1.0 and is enhanced to include schema-aware support in node selection.
工艺设计知识的表达不存在普遍通用的表达模式，而必须根据各类工艺知识的结构特点选择适合的知识表达方法。
There is no universal pattern in representing process planning knowledge and the pattern must be chosen according to the feature of various knowledge.
应用推荐