Ключевые слова: blue, bright, colorful, conduit, construction, cooling, corridor, cylindrical, design, distribution, energy, engineering, facility, factory, flow, futuristic, heating, indoor, industrial, infrastructure, installation, interior, lighting, maintenance, management, metal, metallic, modern, pattern, perspective, pipe, pipeline, reflection, resource, service, shine, supply, symmetry, system, technical, technology, transportation, tunnel, urban, vibrant, wall, water, yellow,