The characteristics and knowledge structure system of mechatronic engineering were analyzed, and training model for students was put forward based on different professional hierarchy.
分析了机械电子工程专业的特点及其知识结构，按人才的不同层次提出了人才培养的模式。
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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