Based on the analysis of the deficiency of the traditional vector space retrieval model, the file structure based vector space retrieval model is presented.
分析了传统向量空间检索模型在网络信息检索中的不足，给出了基于文档结构的向量空间检索模型。
The seismic response analysis model of thin wall space aqueduct with fluid-structure coupling is established.
建立了考虑槽身和槽内水体流固耦合的渡槽薄壁结构梁段有限元动力分析模型。
By reverse thinking, thinking of mitochondrial structure in gas exchange on rationality, this analysis summarizes the structure of green space system model.
通过逆向思维，思考线粒体在气体交换上的结构合理性，由此分析总结出绿地系统结构上的模式。
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