Filter (OIL )- A device which removes solids from a fluid. Flow Meter - A testing device which gauges either flow rate, total flow, or both. Flow Rate - The volume of fluid passing a point in a given time. Fluid Power - Energy transmitted and controlled through use of a pressurized fluid. Force - A push or pull acting upon a body.
Conflicts of national interest caused the World War II alliance between the United States and the Soviet Union to be replaced by a Cold War that lasted 45 years. Initially a dispute over the future of Europe, it grew to include confrontations around the world.
How long did the 'Hundred Years War' between England and France last?   It lasted from 1337 to 1453, which is 116 years, there were various truces and times of peace, but they were actually at war with each other for a total of 83 years.