Force - A push or pull acting upon a body. In a hydraulic cylinder, it is the product of the pressure on the fluid, multiplied by the effective area of the cylinder piston. It is measured in pounds or tons. Friction - The resistance to fluid flow in a hy- draulic system.
temperature increase The pressure of a contained sample of gas can be increased by increasing its temperature, or by decreasing its volume, or by injecting additional mas â¦ s into it.
1 For high blood pressure: 2  AdultsâAt first, 1 milligram (mg) once a day, at bedtime. Your doctor may gradually increase your dose up to 3 mg per day, as needed.  ChildrenâUse and dose must be determined by your doctor.