The XML Extender offers the concept of side tables to speed up the search for XML documents in order to avoid XML parsing for predicate evaluation.

XML Extender 提供索引表的概念来加速对 XML 文档的搜索，以便避免针对谓词运算的 XML 分析。

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Commonly used silica as a reinforcing filler, in order to reduce costs, people look for other cheap and easy to get a filler to replace, but mostly only as extender without reinforcement properties.

通常采用白炭黑作为补强填料，为了降低成本，人们寻找其他廉价易得的填料来代替，然而大都只能作为增量剂而无补强特性。

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