Ключевые слова: barrel, cargo, cogs, collection, color, construction, container, crane, design element, element, equipment, factory, forklift, gauge, gears, hammer, hard hat, heavy industry, hook, icon, industrial, industry, mining, nuclear power, oil, power, power line, power plant, pressure meter, pylon, railroad, robot, round, set, ship, shipping, symbol, technology, valve, wagon, worker,