The continuity and security of the database was achieved with the online backup of double computer.

双机热备实现数据库的连续性和安全性。

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The principle of housekeeping software design, multi-task design, data communication, double computer fault diagnosing and processing are described in detail.

并对软件设计原则、多任务设计、数据通信、双机容错和故障诊断与处理作了较详细的讨论。

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Something more like “See how this computer geek can double your web sales in 24 hours or less…” influences the reader to keep reading.

譬如：“看这个电脑玩家能够在24小时或更少的时间内将您的网络销售翻一番...” 等等诸如此类。

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Nearly a quarter (22%) of adults now own some kind of tablet computer, double the number a year ago (11%), and smartphone ownership is up nine points, from 35% to 44%.

ENGADGET: Pew Research finds 22 percent of adults in US own tablets, low-cost Android on the rise

In a 1965 article for Electronics magazine he formulated Moore's Law, which predicted that the power of computer chips would double every year (later revised to every 18 months) while the cost would decrease at a similar rate.

FORBES: The gentle giant

Most people probably wouldn't want their computer to lead a double life as an agent in a seething, cybercriminal organization.

FORBES: Zombie Storm Rising