Ключевые слова: abstract, background, closeup, conveyance, conveyer, conveyer screw, conveyer spiral, conveying screw, cylinder, equipment, factory, helical conveyor, industrial, industry, iron, machine, machinery, manufacture, manufacturing, mechanical, mechanism, metal, metallic, no people, nobody, package line, packaging, pattern, perspective, plant, powder screw, production, rotating blade, screw drag, screw rake, screw scraper, spiral, spiral drag, spiral rake, spiral scraper, steel, technology, texture, transportation, worm conveyor,