In order to control the nuclear chain reaction, the reactor operators use control rods.
为了控制原子能的连锁反应，反应器的操作人员用到了控制棒。
The chain reaction that actually runs the reactor can be shut off in a matter of seconds.
实际运行反应堆的链式反应可以在数秒左右被关闭。
A fission reactor works by maintaining a controlled nuclear chain reaction.
一座裂变反应堆需要在可控的核裂变中运转。
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