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Lüftungsanlage f
gen.	ventilating system; ventilation facility (Anlagentechnik); ventilator
agric.	ventilating machinery; ventilation plant
chem.	vent
mun.plan., el.	air handling system
tech.	ventilation system; air-handling system; HVAC system

Lüftungsanlage: 6 phrases in 3 subjects

Chemistry	1
Construction	3
General	2