1) Telecommunications equipment
Found on
https://www.crosswordclues.com/clue/microducts
Microducts are small ducts for the installation of small microduct fibre optic cables. They have a size ranging from typically 3 to 16 mm and are installed as bundles in larger ducts. Microducts are typically small-diameter, flexible, or semi-flexible ducts designed to provide clean, continuous, low-friction paths for placing optical cables that h...
Found on
http://en.wikipedia.org/wiki/Microducts
No exact match found.
