Ключевые слова: abstract, background, cable, circle, closeup, coil, component, copper, core, curve, design, detail, details, electric, electrical, electricity, electromagnet, electromagnetic, electronic, energy, engineering, equipment, factory, hardware, induction, inductor, industrial, industry, installation, line, macro, magnetic, material, metal, metallic, no people, object, power, raw material, ring, roll, shiny, spiral, spool, spring, steel, still life, supply, technology, wire,