NET工程文件管理和维护的实现方案，但简化了管理和维护的具体操作。

NET project management and maintenance is remained but the implementation is simplified.

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工程文件编号生成算法是国航工程文件管理系统（AEDMS）开发的难点。

Engineering Document Number(EDN) Generation Algorithm(EDNGA) is one of the difficulties in the development of Air China Engineering Document Management System(AEDMS).

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项目相关的供应商，工程，设备的文件和记录管理。

Archiving management of documents and records related to Project, including supplier, engineering and equipment.

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