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abbreviated precision approach path indicator
航空, 加拿大	indicateur de trajectoire d’approche de précision simplifié
英语 词库
abbreviated precision approach path indicator
航空, 加拿大	A visual glide slope indicator VGSI consisting of only two light units normally situated on the left side of the runway in the form of a wing bar and indicating that the aircraft is on slope if the unit nearest the runway shows red and the unit furthest from the runway shows white, too high if both units show white, and too low if both units show red