本文采用语义数据建模技术表示工程设计数据的逻辑组织结构。
A semantic data modeling technique is employed to represent the logical organization of engineering design data.
为什么不将数据建模为文档呢？这样可以不用死守严格的关系模式，而只需要大致遵循高级模式的语义。
Why not just model the data as a document, which doesn't necessarily fit into a rigid relational model but roughly follows the semantics of a high-level model?
逻辑数据和语义信息建模。
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