ガス冷れい却きゃく炉ろガスれいきゃくろMeanings1noungas-cooled reactorTechnical term in nuclear engineering; refers to a reactor that uses gas (often carbon dioxide or helium) as the primary coolant.英えい国こくではガス冷れい却きゃく炉ろが長ながく使つかわれてきた。