AFILTER元素所指示的过滤器允许查询指定属性值(该查询应该为属性返回数据)。
Filters, indicated by the AFILTER element, allow the query to specify the values of attributes for which the query should return data for.
AFILTER元素所指示的过滤器允许查询指定属性值(该查询应该为属性返回数据)。
Filters, indicated by the AFILTER element, allow the query to specify the values of attributes for which the query should return data for.
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