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.
For the foreign policy of the United States, the cold war defined the last half of the twentieth century. It was a war of ideas, of threats, and of actual fighting in the countries of Korea and Vietnam, pitting western nations against the Soviet Union and China and their Communist allies. The 1940s and 1950s saw the cold war bloom into a period of unparalleled suspicion, hostility, and persecution.