Ключевые слова: arc, assembly, background, construction, control, electric, engineering, equipment, factory, fire, flame, flash, gloves, helmet, hot, industrial, industry, iron, job, laboratory, light, machine, man, manufacture, manufacturing, mask, metal, metalwork, occupation, power, precision, process, production, professional, protection, repair, safety, skill, smoke, spark, sparks, steel, technology, tool, weld, welder, welding, work, worker, workshop,