mechanical engineering 72 engineering 53 machine parts and joints 37 fixtures 23 pipelines 23 technology 19 robotics 18 more ... machines 18 classical mechanics 16 cars 15 mathematical models 13 thermodynamics 13 oscillations (physics) 12 material engineering 12 heat transfer 12 hydromechanics 10 tribology 10 turbulent flow 10 automation 9 dynamics 9 simulation and modelling 9 internal combustion motors 9 applied mathematics 8 continuum mechanics 8 gas and vapour flow 8 technical mechanics 8 dynamic systems 7 electrotechnics 7 materials 7 mechanics of rigid bodies 7 less ...