Ключевые слова: abstract, architecture, background, bolt, build, business, close up, connection, construction, engineer, engineering, equipment, factory, fixing, hardware, industrial, industry, infrastructure, iron, joint, labor, machinery, manufacture, manufacturing, material, mechanic, mechanical, metal, nut, painted, pipe, pipeline, plant, production, repair, riveted, rivets, screw, screwing, steel, strength, strong, structure, technology, texture, thread, tighten, tool, tube, work, workplace,