Ключевые слова: background, bridge, canal, close, cog, cogwheel, concrete, control, dam, design, energy, engine, engineering, equipment, floodgate, gate, gear, grunge, industrial, industry, iron, irrigation, landscape, large, machine, machinery, mae chaem, mechanical, metal, mountains, nature, old, open, outdoor, power, retro, river, rural, rusty, steel, technology, thailand, travel, tree, valve, view, water, wheel, wheels, work,