With a controlled chain reaction, a reactor draws power steadily and stably for years.

采用可控链式反应，反应器可稳定供电数年。

Nuclear power relies on the fission of uranium nuclei and a controlled chain reaction that reproduces this splitting in many more nuclei.

核能依赖于铀的核裂变和一个可控的复制性核裂变的链式反应。