a type of nuclear reactor which is graphite-moderated and gas-cooled, with fuel elements in the form of pellets
A pebble bed reactor is a type of Very High Temperature reactor.
noun 1. an exterior wall finish composed of mortar against which, while still wet, small pebbles have been thrown and pressed in. noun 1. (Brit) a finish for external walls consisting of small stones embedded in plaster
- Pebble garden
noun 1. (NZ) a small ornamental garden mainly composed of an arrangement of pebbles
noun 1. a heat exchanger utilizing refractory pellets to store and give off heat.
[peb-uh l] /ˈpɛb əl/ noun 1. a small, rounded stone, especially one worn smooth by the action of water. 2. Also called pebble leather. leather that has been given a granulated surface. 3. any granulated or crinkled surface, especially of a textile. 4. a transparent colorless rock crystal used for the lenses of eyeglasses. 5. […]