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本文提出了基于 Ｓ Ｔ Ｅ Ｐ 的产品装配数据模型和装配 Ｃ Ａ Ｄ／ Ｃ Ａ Ｐ Ｐ 集成系统框架，并研究了 Ｅ Ｘ Ｐ Ｒ Ｅ Ｓ Ｓ数据模式和集成系统在关系数据库上的实现方法，最后，给出了应用实例。
In this paper, a product assembly data model based on S T E P and a system framework of assembly C A D / C P P P are put forward. The implementation of E X P R E S S data model and integrated system on the relational database are studied. Finally, the application example is given.