The maintenance of a constant difference in frequency between two or more connected circuits or components
The alignment of the wheels of a vehicle
The formation of a conducting path for an electric current over the surface of an insulating material
TRACKING, the placement of students within a curriculum [n]
The practice of putting schoolchildren in groups of the same age and ability to be taught together
A control in a videocassette recorder that electronically adjusts the manner in which the head receives signals from the videotape, providing a clearer playback