noun
light-water reactor
Technical term in nuclear engineering; a reactor that uses ordinary water as both coolant and moderator. Contrasts with 重水炉 (heavy-water reactor).
See also: 重水炉
日本の原子力発電所の多くは軽水炉を採用している。
Many nuclear power plants in Japan use light-water reactors.
Heavy-water reactor; uses heavy water (deuterium oxide) as moderator, unlike 軽水炉 which uses ordinary light water.
Compound of 軽水 (light water) and 炉 (furnace/reactor). The term is a direct calque of English 'light-water reactor'.