directly as the air or gas density

inversely as square root of density

inversely as density

as square of density

directly as the air or gas density

inversely as square root of density

inversely as density

as square of density

ratio of diameters

square of ratio of diameters

inverse ratio of diameters

square of inverse ratio of diameters

two cylinders, two rams and a storage device

a cylinder and a ram

two co-axial rams and two cylinders

a cylinder, a piston, storage tank and control valve

two cylinders, two rams and a storage device

a cylinder and a ram

two co-axial rams and two cylinders

a cylinder, a piston, storage tank and control valve