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English thesaurus
Instrument Landing Systems
aeron., abbr.	ILS
Instrument Landing System
el., abbr.	ILM
instrument landing system
avia., Canada	A radionavigation precision-approach system that provides aircraft with horizontal and vertical guidance just before and during landing and that, at certain fixed points, indicates the distance to the reference point of landing

Instrument : 2 phrases in 1 subject

Microsoft

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