» For the mechanical technology, see hydraulic machinery and hydraulic cylinder Hydraulics's a topic in applied science and engineering dealing with the mechanical properties of liquids. Fluid mechanics provides the theoretical foundation for hydraulics, which focuses on the engineering uses of fluid properties. In fluid power, hydraulics's used for the generation, control, and transmission of power by the use of pressurized liquids. Hydraulic topics range through most science and engineering d… (More on Hydraulics)