Examlex
According to Piaget, at approximately what age does the skill of thinking abstractly and hypothetically begin?
Spool
A cylindrical device around which materials such as thread, wire, or film are wound for storage.
Swashplate Pump
A type of hydraulic pump where a rotating swashplate controls the flow of fluid, used in various high-pressure hydraulic systems.
Wobble Plate
A mechanical component used in axial piston pumps or engines to convert rotational motion into linear motion, or vice versa, through its off-center rotation.
Pumping Action
The process of moving fluid through a system or component via mechanical or manual force.
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