Control rods shut down the nuclear fission reactions that generate power.

控制棒终止了产生热量的核裂变反应。

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Nuclear reactors work in a similar way to other power plants, but instead of using coal or gas to generate heat, they use nuclear fission reactions.

核反应堆的工作原理和其他的发电站很相似，不过它们并不是使用煤炭或煤气来生成热量，而是利用核裂变反应。

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The nuclear fusion and fission reactions were measured by the forward and backward angle detectors.

对 反应系统通过前后角符合测量，分析了熔合和裂变两个反应过程。

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The Daily Yomiuri continued to follow the government's moves to investigate the accident with a story about how Japan's Science and Technology Agency plans to exactly re-create the nuclear fission chain reactions that occurred at the plant--presumably under safer conditions.

CNN: ASIANOW - Asiaweek | Daily Briefing: New Stability in India?

About 2 billion years ago, uranium rocks at a site in Oklo, Gabon, experienced such compression that they underwent fission reactions much like those that occur in nuclear reactors.

ECONOMIST: Fundamental physics