a control rod that can be dropped into a reactor in an emergency to stop the reaction by absorbing the free neutrons that would otherwise sustain it.
| 单词 | θ79656 |
| 释义 | the world > matter > physics > atomic nucleus > nuclear fission > nuclear reactor > [noun] > rod for use in emergency (1) safety rod1945 a control rod that can be dropped into a reactor in an emergency to stop the reaction by absorbing the free neutrons that would otherwise sustain it. |
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