Cylinders Internal combustion engines 13 Structural stability 12 Motors 9 Standards 8 Steel 8 Automobiles 7 Fluid mechanics 6 Design and construction 5 Spark ignition engines 5 Acetylene 4 Hydrodynamics 4 Ocean currents 4 Plates, Iron and steel 4 Vibration 4 Wave resistance (Hydrodynamics) 4 Buckling (Mechanics) 3 Crankshafts 3 Pistons and piston rings 3 Automoibles 2 Combustion 2 Diesel motor 2 Elastic plates and shells 2 Gases 2 Liquefied petroleum gas 2 Mathematical models 2 Measurement 2 Nonlinear oscillations 2 Offshore structures 2 Plates (Engineering) 2