Ключевые слова: blue, cad, circle, cogwheel, component, concept, connected, construction, cooperating, correspond, design, detail, device, drafting, draw, drawing, element, engine, engineering, equipment, gearing, graphic, idea, industrial, interlock, join, machinery, mechanical, mechanism, metal, office, paper, pattern, precision, project, ratchet, simultaneous, sketch, socket, sprocket, structure, synchronized, table, technical, technology, together, tool, wheel, wrench,