根据层次分析法的原理，结合旅游资源评价指标体系，建立层次结构模型。

Based on the principle of analytical hierarchy process (AHP) and the characteristics of evaluation index system about tourism resource, the AHP model is established in this paper.

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于是，对象存储设备成为对象的平面名称空间（flat namespace），必要时，在存储系统栈中的更高层建立层次结构。

Object storage devices then become flat namespaces of objects, where hierarchy (if necessary) is built higher up in the storage system stack.

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我们将要建立一个与文件层次标准(参见参考资料)相去不远的目录结构。

We will build a directory structure not that far from the File Hierarchy Standard (see Resources).

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