Ключевые слова: abstract, background, building, cellular, connect, connection, construction, craft, craftsman, cutting, detail, electrode, engineering, equipment, fabrication, factory, fire, industrial, industry, inspector, iron, joint, labor, light, lightning, machine, manufacture, manufacturing, material, metal, metallic, pipe, protection, repair, rough, rust, safety, skill, spark, sparkle, steel, structure, technical, technology, texture, welder, welding, work, worker, workshop,