Other Definitions
duct (dict)

Duct

• An atmospheric duct.
• A conduit in telecommunications which may be buried or encased.
• A Heating Ventilating and Air-Conditioning duct for transfer of air between spaces in a building.
• Various ducts in anatomy and physiology, e.g. the milk ducts in the mammary glands.

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direct distance dialing directional coupler directive gain direct sequence spread spectrum disengagement originator dispersion limited operation distortion distortion limited operation distributed database distributed queue dual bus distributed switching	disturbance voltage diurnal phase shift diversity reception dod master clock double ended synchronization double sideband reduced carrier transmission double sideband suppressed carrier transmission doubly clad fiber d region drift drop (liquid)	drop and insert dropout dual access dual in line package duobinary signal duplexer duty cycle dynamic range earth terminal complex echo (mythology) effective data transfer rate	effective earth radius effective height effective input noise temperature effective mode volume effective power effective transmission rate efficiency factor eia interface electrical length electric field electromagnetic compatibility