对于处理策略定义了3种操作：标准化，融合和交集。
There are three defined operations for processing policies; Normalize, Merge, and Intersect.
这需要IXAND操作符仅仅为了找到一个小交集而进行繁重的工作。
This requires heavy work in the IXAND operator only to find a potentially small intersection.
交集处理从 <wsp:All>操作符取出绑定的每个替代。
The intersection process takes each alternative bounded by the <wsp:All> operators.
Sets提供了用于节点集操作的函数，包括返回两个节点集的交集和返回出现在一个节点集中而不在另一节点集中的节点。
Sets provides functions for nodeset manipulation, including returning the intersection of two nodesets and returning nodes that appear in one nodeset but not another.
两个权限的交集是一个权限，用于描述它们共同描述的一套操作。
The intersection of two permissions is a permission that describes the set of operations they both describe in common.
两个权限的交集是一个权限，用于描述它们共同描述的一套操作。
The intersection of two permissions is a permission that describes the set of operations they both describe in common.
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