air conditioning system on a roof in the city
Schlüsselwörter
air,
blue,
building,
business,
climate,
conditioner,
construction,
cooler,
cooling,
electric,
electricity,
energy,
engineering,
environment,
equipment,
factory,
generator,
heat,
industrial,
industry,
metal,
modern,
pipe,
plant,
production,
sky,
steel,
system,
technology
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