Design and construction 3 Hydraulic machinery 3 Pumping machinery Water-supply engineering 3 Hydraulics 2 Actuators 1 Air conditioning 1 more ... Air-compressors 1 Artificial groundwater recharge 1 Automatic control 1 Bearings (Machinery) 1 Belts and belting 1 Brakes 1 Channels (Hydraulic engineering) 1 Clutches (Machinery) 1 Combined cycle power plants 1 Combustion 1 Condensers (Steam) 1 Distribution 1 Drainage 1 Energy conservation 1 Energy dissipation 1 Environmental engineering 1 Environmental hydraulics 1 Equipment and supplies 1 Feed-water heaters 1 Fluid mechanics 1 Flywheels 1 Gases, Compressed 1 Gearing 1 less ...