The computer protection system in the electrified railway can use computers to supervise and control its external secondary wiring, which improves the intelligence of computer protection.

论述了目前电气化铁道计算机继电保护系统在运行中如何利用计算机对其外部二次线路进行监控的问题，能提高计算机继电保护智能化的程度。

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This paper explores the hierarchy protection on the national computer information system.

介绍了国家的计算机信息系统安全等级保护。

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The traditional computer aided power system relay protection setting calculation software package usually has boring interfaces and inconvenient operation procedures, and poor reusability.

传统的电力系统继电保护计算机辅助计算软件界面单调，操作繁琐，且程序的可移植、可重用性差。

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With its own copy-protection system, Google joins the ranks of DRM-heavies Apple Computer and Microsoft, which some say hurt consumers and their own profits by not freeing up digital content into a single, standard format.

FORBES: Magazine Article

With its own copy-protection system, Google joins the ranks of DRM-heavies Apple Computer (nasdaq: AAPL - news - people ) and Microsoft (nasdaq: MSFT - news - people ), which some say hurt consumers and their own profits by not freeing up digital content into a single, standard format.

FORBES: Google Goes Gaga For Video