A structure conveying fluid, such as the cerebral aqueduct or vestibular aqueduct.
An artificial channel that is constructed to convey water from one location to another.
A structure carrying water over a river or depression, especially in regards to ancient aqueducts.
A system of ducts for cables, heating or ventilation.
The movement of containers or packages between a terminal and a transporter's inland facilities, or the scheduled transportation service between locations.
All the electrical and communications cables bundled together and distributed through a building.
Plastic conduit or duct used to conceal and protect electrical wiring.
A two-way radio technique that uses a control channel to automatically assign frequency channels to groups of user radios.