When air exists as bubbles, a moving fluid may be able to carry them along through the system.This is called ____ air.

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Entrained air refers to air bubbles that are carried along by a fluid flow. It is commonly seen in pipelines, pumps, and other fluid systems. Fluid air refers to a state where air is dissolved in a fluid, such as oxygen in water. Deaerated air refers to air that has been removed from a fluid or a system, such as through a deaeration process. Bubbly air is a general term that refers to the presence of air bubbles in a fluid, but it does not specifically describe the mechanism by which they are carried along.

When Air Exists as Bubbles, a Moving Fluid May Be