是保障飞机飞行平安的重要目视助航设备，在飞机进近和着陆过程中起着要害功效。
It is the important visual auxiliary navigation equipment to guarantee safe flight, and is an key link in the process of landing.
游标速度，在某些机动飞行过程中，特别是在进近和着陆时，飞机所应保持的预定速度。
BUG speed, a preselected speed to be observed during certain maneuvers, particularly the approach and landing sequence.
采用德尔菲法对现役飞行员进行两轮咨询，建立了基于安全性的进近和着陆阶段飞行员操作程序综合评价指标体系；
The comprehensive evaluation index system of POP in approach and landing phases was established by consulting in-service pilots with Delphi method twice.
采用德尔菲法对现役飞行员进行两轮咨询，建立了基于安全性的进近和着陆阶段飞行员操作程序综合评价指标体系；
The comprehensive evaluation index system of POP in approach and landing phases was established by consulting in-service pilots with Delphi method twice.
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