machine parts and joints koroze materialu 1,162 ohrana materialu 1,161 machines 27 mechanical engineering 27 simulation and modelling 13 construction 10 more ... engineering drawing 10 technical mechanics 9 workpieces and instruments clamping 8 classical mechanics 7 teaching aids 6 kinematics 5 design of machines 5 machine tools 5 machine-tools 5 gear drives 5 descriptive geometry 4 gear wheel 4 milling cutters 3 oscillations (physics) 3 composition materials 3 mills 3 polyhedra 3 instruments 3 tools 3 reciprocating steam engines 3 surface treatment of materials 3 gears 3 rotary motion parts 3 less ...