TJ Mechanical engineering and machinery 116 Machine design and drawing 16 Mechanics applied to machinery. Dynamics 14 Materials of engineering and construction 11 Composite materials 10 Machine construction (General) 9 Engineering machinery, tools, and implements 7 Finite element method 7 Mechanics of engineering. Applied mechanics 5 Biotechnology 4 Descriptive and experimental mechanics 4 Metallurgy 4 Building materials 3 Concrete 3 Engineering mathematics. Engineering analysis 3 Mechanical devices and figures. Automata. Ingenious mechanisms.Robots (General) 3 Polyethylene 3 Reinforced concrete 3 Strength and testing 3 Welding 3 Analysis 2 Analytic mechanics 2 Atomic physics. Constitution and properties of matter 2 Carbon nanotubes. Nanoparticles. Nanostructured materials 2 Control of production systems 2 Corrosion and anti-corrosives 2 Energy conservation 2 Engineered wood. Fiberboard, particle board, etc 2 Hydraulic machinery 2 Laboratories. General works 2