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。
Strand space model is a new formal analysis tool to the analysis of cryptogram protocol.
串空间模型是一种新兴的密码协议形式化分析工具。
Based on the mechanism analysis, the elastic plastic model of space formation caused by blasting with linear charges is established.
通过对条形装药爆破成腔机理的分析，建立了爆炸挤压成腔弹塑性简化模型。
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