In order to solve problems of reuse difficulty and low management efficiency of resource base system, a resource-base system model was proposed based on hierarchy semantics network.
为了解决资源库系统内容重用难及管理效率低的问题，采用分层语义网络结构提出了一种提高资源关联性及利用率的资源库系统模型。
The hierarchy figure of factors, which affected urban railway transit network scale, was established by the structure model method in system engineering.
运用结构化模型方法，建立了影响城市轨道交通线网规模因素的多级递阶结构图。
The hierarchy figure of factors, which affected urban railway transit network scale, was established by the structure model method in system engineering.
运用结构化模型方法，建立了影响城市轨道交通线网规模因素的多级递阶结构图。
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