XSDHelper将从XSD文档中加载元数据，而XMLHelper允许从XML文件加载数据图。
An XSDHelper will load metadata from an XSD document, and an XMLHelper lets you load data graphs from an XML file.
其他所有的事件在视频的元数据加载之后方可使用。
All others are available after the video's meta data has loaded.
索引将重要的加载放置在Batch Report Service的操作上以便检索元数据和数据。
Indexing puts significant load on the operation of the Batch Report Service to retrieve both metadata and data.
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