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IRCS abbr.
abbr.	Improved Radar Calibration System; Institute for Research in Cognitive Science (organization, Uni Pennsylvania, USA)
abbr., avia.	international research communications system; intrusion resistant communications system
abbr., earth.sc.	inertial radio source coordinate system
abbr., el.	intersite radio communications system
abbr., fishery	international radio call sign
abbr., health.	International Red Cross Society (Игорь_2006)
abbr., med.	intrarenal collecting system (l'etoile87)
abbr., oil	inertial reference and control system
abbr., scottish	Intrusion-Resistant Communications System
mil.	infrared communications system
tech.	intercomplex radio communications system