The technical supporting system for power generation market is a huge information system integrated with computer, network and communication technique.

发电市场技术支持系统是与计算机技术、网络通信技术相结合的庞大的信息系统。

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Therefore, the research of Internet security technique has been one of focuses in the communication and an important research area of the information science.

因此，网络安全技术的研究已成为现在计算机和通信界的一个热点，并且成为现在信息科学的一个重要研究领域。

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This paper introduced the functional module, communication mode, information flow, communication standard and encryption technique of Electronic Data Interchange.

介绍了电子数据交换的功能模块、通信方式、信息流程、通信标准和加密技术。

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