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中文摘要：
从满足产品数据在全生命周期内集成和共享的需求出发,提出了基于STEP标准的产品数据表达框架,构建了基于EXPRESS语言的产品信息模型,并将信息模型向XML进行表达映射.该方法可有效降低产品生命周期内的产品数据交换成本,提高产品研发效率,同时可使产品数据通过Internet进行传输.
英文摘要：
To satisfy the product data integration and share in product lifecycle, the product data representation architecture based on STEP was put forward and the product information model based on EXPRESS was established. The information model was reflected to XML scheme. The method can decrease the product data exchange cost, increase the efficiency of product development, and make the product data transport in Internet.
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