Ключевые слова: abstract, background, black, business, cable, cabling, city, closeup, coil, connection, construction, electric, electrical, electricity, electronic, energy, equipment, facility, factory, fiber, industrial, industry, isolated, line, network, parallel, pipe, plastic, power, protect, protection, pvc, reel, roll, rubber, spool, technology, texture, tube, tubing, underground, vertical, volt, voltage, watt, wire, wood,