fission
의미: The splitting of an atomic nucleus into two or more smaller nuclei, releasing a large amount of energy. In biology, fission refers to the division of a cell or organism into two or more parts as a form of reproduction.
Nuclear fission is the process that powers conventional nuclear reactors and atomic weapons. The term is inextricably linked with debates about energy policy, nuclear proliferation, and weapons disarmament. It collocates with nuclear, chain reaction, product, and reactor. In biological contexts, binary fission describes how bacteria reproduce. Figuratively, fission occasionally appears in political writing to describe the splitting apart of organisations, alliances, or ideological movements — though this usage is less common than 'split' or 'fracture.'
예문
- The nuclear fission of uranium-235 releases approximately 200 million electron volts of energy per atom. 铀-235的核裂变每个原子释放约2亿电子伏特的能量。La fisión nuclear del uranio-235 libera aproximadamente 200 millones de electronvoltios de energía por átomo.ウラン235の核分裂は、一原子あたり約2億電子ボルトのエネルギーを放出する。우라늄-235의 핵분열은 원자 하나당 약 2억 전자볼트의 에너지를 방출한다.
- Britain's fleet of ageing fission reactors is gradually being decommissioned as the country transitions to renewable energy sources. 随着英国向可再生能源转型,其老化的裂变反应堆群正在逐步退役。La flota británica de reactores de fisión envejecidos se está desmantelando gradualmente a medida que el país avanza hacia las energías renovables.英国の老朽化した核分裂炉群は、再生可能エネルギーへの移行に伴い段階的に廃炉されている。영국의 노후화된 핵분열 원자로 함대는 재생에너지원으로의 전환에 따라 점차 폐로되고 있다.
- The party underwent a dramatic fission in the 1980s, with moderates breaking away to form a new centrist movement. 该政党在20世纪80年代经历了一次剧烈的分裂,温和派脱离出来组建了一个新的中间派运动。El partido experimentó una dramática fisión en la década de 1980, cuando los moderados se escindieron para formar un nuevo movimiento centrista.その政党は1980年代に劇的な分裂を経験し、穏健派が離脱して新たな中道派運動を結成した。그 정당은 1980년대에 극적인 분열을 겪었으며, 온건파가 이탈하여 새로운 중도주의 운동을 결성했다.
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사용 가이드
맥락: scientific, academic, journalism
어조: neutral
기원과 역사
From Latin fissio (a splitting, cleaving), from findere (to split). The nuclear physics sense was coined in 1939 by the physicists Lise Meitner and Otto Frisch following the discovery of uranium splitting.
문화적 배경
Era: Modern
Generation: All ages
Social background: Universal
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