The flight control computer plays a kernel role in flight control systems. Ultra reliability is needed to ensure that the ratio of system failure is less than 10-8 /hour.

在飞行控制系统中，飞行控制计算机起着核心作用，要求具有极高的可靠性，整个系统的失效率要求小于10-8/小时。

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Instead of a fixed number of hours spent exercising, the ratio depends on how much you sit: people who work a typical eight-hour day should spend at least one hour each day moving;

不用固定时间专门锻炼，锻炼的时间比例取决于你坐了多久：典型工作八小时的人每天至少要花一个小时来运动；

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Instead of a fixed number of hours spent exercising, the ratio depends on how much you sit: people who work a typical eight-hour day should spend at least one hour each day moving;

不用固定时间专门锻炼，锻炼的时间比例取决于你坐了多久：典型工作八小时的人每天至少要花一个小时来运动；

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