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precision approach path indicator
 precision approach path indicator
运输 航空 anläggning för visuell glidbaneindikering
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precision approach path indicator

运输, 航空 anläggning för visuell glidbaneindikering PAPI
 英语 词库
precision approach path indicator
航空, 加拿大 A visual glide slope indicator VGSI consisting of four light units normally situated on the left side of the runway on both sides of the runway, in the case of the military in the form of a wing bar and indicating that the aircraft is on slope if the two units nearest the runway show red and the two units furthest from the runway show white, too high if all units show white, and too low if all units show red. (VGSI)
Precision Approach Path Indicator
缩写, 苏格兰语 PAPI

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