Ключевые слова: background, blade, burn, circle, construction, cut, dark, disc, electric, engineer, engineering, equipment, factory, flash, grinder, hand, industrial, industry, iron, job, light, line, machine, manual, manufacture, metal, power, production, protection, round, safety, saw, science, spark, steel, structure, technology, tool, use, welding, wheel, white, work, worker, workshop,