Design and construction 81 Machine 33 Agricultural machinery 14 Ground-effect machines 12 Dynamics 10 Motor vehicles 10 Loaders (Machines) 8 Milling-machines 8 Automobiles 7 Hydraulic equipment 6 Machine design 6 Machines 6 Electronic apparatus and appliances 5 Equipment and supplies 5 Testing 5 Testing-machines 5 Engineering design 4 Jigs and fixture 4 Packaging machinery 4 Product design 4 Programmable controllers 4 Golf balls 3 Winding machines 3 Arigculture machinery 2 Assembling machines 2 Assembly-line methods 2 Automation 2 Bending machines 2 Hydrofoil boats 2 MacBook (Computer) 2