On the basis of Embedded Operating system, an electronic flight instrument system (EFIS) software is designed and implemented.

设计了一种基于嵌入式操作系统的电子飞行仪表系统软件。

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Several business aircraft, regional jets and helicopters certified for instrument flight rules are included in this certification.

这次论证包括根据仪器飞行规则所鉴定的几架商业飞机、地域性飞机和直升机。

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Feathers did, of course, eventually become an instrument of flight.

当然，羽毛最终进化成为飞翔的工具。

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This includes flying under both visual flight rules and instrument-rated rules.

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He's also an instrument-rated pilot and wrote Free Flight with passion and authority.

FORBES: Digital Rules