The course of building "thought model" is that of understanding, deeply understanding and highly generalizing the cognitive objects.
建立“思想模型”的过程就是对事物认识、深化和高度抽象的过程。
It USES 3-d solid element to reinforced concrete and link element to pre-stressed and cable in the course of building model.
在建模过程中，采用三维实体和杆单元相结合的形式，用三维实体单元模拟钢筋混凝土，用杆单元模拟预应力钢束和斜拉索。
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