本文介绍了“基本图形交挟规范IGES的实现”这一“七五”项目中所定义的数据结构——广义多重表（GML）。

This paper offers a detailed introduction of the Generalized Multi-List (GML), a data structure defined in the project "the Implementation of Initial Graphics Exchange Specification".

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使用修饰词源码视图，你能见到显示类，源文件，甚至整个包在多重运行中覆盖率的图和表。

Using the Annotated source view, you can see graphs and charts showing coverage percentages of classes, source files, or even entire packages, across multiple runs.

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然而，如果每个不同的索引值都有许多重复的行，而所关联的表是高度群集的，那么通过索引添加的连接成本可能很低。

However, if there are many duplicate rows per distinct index value, and the associated table is highly clustered, the added costs of joining through the index can be slight.

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