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.

youdao

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.

youdao