According to the definition of assembly semantics and based on functional characteristics, it classified the assembly semantic from the top-level.
然后根据装配语义的定义，以功能特征为主要参考，对零部件之间的装配语义从顶层进行分类。
This paper firstly conducted functional needs analysis for semantic modeling in virtual assembly operations, and then put forward the definition of assembly semantics.
首先对交互虚拟装配操作中语义建模的功能需求进行了分析，在此基础上提出装配语义的定义。
Assembly semantics is the abstract and generalization of assembly constraints among parts, thus using semantics can prominently enhance the straight forwardness and efficiency of assembly design.
装配语义是零件间装配约束的抽象与概括，研究基于语义的产品装配设计可有效地提高装配设计的直观性与装配效率。
Assembly model is layered according to the STEP neutral document of assembly and simplified according to the project semantics information.
根据装配体step中性文件对装配模型进行分层，根据工程语义信息对装配模型进行简化。
Assembly model is layered according to the STEP neutral document of assembly and simplified according to the project semantics information.
根据装配体step中性文件对装配模型进行分层，根据工程语义信息对装配模型进行简化。
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