This is different from the drill-down method because with zooming, the map is typically not rebuilt or reorganized for each level of magnification.

这种方法由于使用了缩放而不同于drill - down，对于每一个级别的放大操作，地图通常不用重建或重组。

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Figure 18: scope Management drill-down from an Investment Map: Pie chart showing distribution of project scope items.

图18：从Investment Map得到的Scope Management：饼图表显示了项目范围条目的分布信息。

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