Ключевые слова: black, board, box, button, circuit, console, control, device, dial, display, distribution, electric, electrical, electricity, electronic, energy, engine, engineer, equipment, factory, fuel, gauge, indicator, industrial, industry, installation, instrument, level, line, machine, measurement, metal, meter, panel, plant, power, room, safety, scale, sign, station, steel, supply, switch, system, technical, technology, voltage, work,