TJ Mechanical engineering and machinery TS Manufactures 17 Machine design and drawing 14 HD Industries. Land use. Labor 4 Machine construction (General) 4 Mechanics applied to machinery. Dynamics 2 Mechanics of engineering. Applied mechanics 2 QA75 Electronic computers. Computer science 2 T Technology (General) 2 VM Naval architecture. Shipbuilding. Marine engineering 2 Aeronautics. Aeronautical engineering 1 Building materials 1 Composite materials 1 Control engineering systems. Automatic machinery (General) 1 Energy conservation 1 Finite element method 1 Fuzzy arithmetic 1 Fuzzy logic 1 Information technology. Information systems 1 Machine shops and machine shop practice 1 Mechanical and electrical engineering combined 1 Metal manufactures. Metalworking 1 Microelectromechanical systems 1 Motor vehicles. Cycles 1 NA Architecture 1 QA76 Computer software 1 Renewable energy sources 1 Steam engineering 1 TK Electrical engineering. Electronics Nuclear engineering 1 TL Motor vehicles. Aeronautics. Astronautics 1