Ключевые слова: arc, argon, assembly, background, blue, building, burner, close up, connection, construction, electrode, engineer, fire, flame, flash, hand, hands, heat, heavy, helmet, horizontal, hot, light, man, manual, manufacture, metalworking, model, occupation, production, protection, release, repair, rod, service, skill, smoke, spark, structure, technical, technology, tone, tool, wear, welder, white, work, worker, workplace, workshop,