An XPath expression allows you to define a set of node relationships in the document and return subsets of content from the document based on these relationships.

XPath表达式允许您在文档中定义一个节点关系集，并允许根据这些关系从文档返回内容的子集。

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The UDDI security model is defined by the set of registry and node policies and their implementations.

UDDI安全模型由注册中心和结点策略以及它们的实现集合定义。

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The resulting set of elements is called a node set.

结果元素集称为节点集。

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The Bitcoin Foundation mission leads to the early specific goals of financially sponsoring the efforts of the core development team, funding core infrastructure such as a test network and a DNS seed node, publishing a set of best practices for bitcoin integration, coordinating responses to business and media inquiries, and organizing an annual bitcoin conference with the first one being held in Silicon Valley.

FORBES: Bitcoin Foundation Launches To Drive Bitcoin's Advancement