| 释义 |
Definition of pebble bed in English: pebble bednoun 1Geology a deposit of conglomerate containing pebbles, especially one from which they readily work loose with weathering. 2Nuclear Physics a nuclear reactor in which the fuel elements are in the form of pellets, often with a coating of moderator; usually attributive.
Origin Mid 19th century; earliest use found in Joseph Prestwich (1812–1896), geologist. Definition of pebble bed in US English: pebble bednoun 1Geology a deposit of conglomerate containing pebbles, especially one from which they readily work loose with weathering. 2Nuclear Physics a nuclear reactor in which the fuel elements are in the form of pellets, often with a coating of moderator; usually attributive.
Origin Mid 19th century; earliest use found in Joseph Prestwich (1812–1896), geologist. |