These transformations group a set of mappings based on a given XPath expression condition.

这些转换根据给定的 XPath 表达式条件对映射进行分组。

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An MTF transformation results in a set of mappings that relate objects among different models; an object unbound to any mapping is considered out of the scope of the transformation.

一个MTF转换的结果是一组映射，它们把不同模型中的对象联系起来；一个与任何映射都无关的对象被认为是位于转换域外的。

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The mapping table allows the user to perform scalar mappings, which is to perform restructures that do not have set semantics and that do not change the dimensions of the structures.

映射表允许用户执行标量映射，也就是要执行没有组合语义且不更改结构维度的重构。

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