关键词: 工程数据, 图文混合, 存储与显示, 工程语义, 表达模型

Abstract:

With the rapid development of enterprise information applications, the storage and display of engineering data, especially the storage and display of mixed graphics and text’s engineering data, cannot satisfy the recent applications by only relying on escape character. The paper proposes an expression model of engineering semantics based on XML, and presents its model’s realization. It can not only express a variety of custom graphical engineering data but also be integrated with other text information. It is convenient to display engineering data and extract engineering semantic. The application of the expression model in CAD and CAPP plays a good effect.

Key words: engineering data;mixed graphics and text;storage and display;engineering semantics;expression model