简要介绍了彩虹金属屋顶成型工艺的各种优点及应用情况，用图形说明了经过成型机加工成型后板材的外观结构、断面形状。

This paper briefly introduces the advantages and use of the rainbow metal roof's make-up technology, illustrates the shaped plate's outward appearance and section.

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说明如何自订资料库结构描述中所未定义之资料栏位类型的外观与行为。

Shows how to customize the appearance and behavior of data field types that are not defined in the database schema.

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