您可以对该树视图进行配置以显示多级导航，它将以树层次结构显示指向子页面的导航链接。
You can configure the treeview to show multiple levels of navigation that show navigation links to child pages in a tree hierarchy.
基于层次型结构多级优化模型，提出了结构多级优化建模的一般方法，给出了一个应用实例。
A modeling method for structural multilevel optimization is developed in this paper, an example of application is also presented.
根据桥梁结构的构造特点，将桥梁系统分为多级子系统，从而建立了桥梁损伤评估的层次结构模型。
According to its characters, bridge system was divided into several multilevel-systems, and a hierarchy assessment model was established.
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