Ключевые слова: abstract, background, black, cable, cabling, city, coil, connection, construction, detail, drum, electric, electrical, electricity, electronic, energetic, energy, equipment, facility, factory, fiber, industrial, industry, isolated, large, line, metal, metallic, network, orange, paralel, pattern, plastic, power, protect, protection, pvc, reel, roll, spool, technology, tube, tubing, underground, urban, vertical, volt, voltage, watt, wire,