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。
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。
There is a minimum size for the reactor at which the chain reaction will just work.
为使链式反应刚好能够维持下去，反应堆要有一个最起码的尺寸。（目的状语）
The speed of the chain reaction and the temperature of the fuel are also controlled by the water in the reactor vessel.
链式反应的速度和燃料的温度也受到容器中的水的控制。
The speed of the chain reaction and the temperature of the fuel are also controlled by the water in the reactor vessel.
链式反应的速度和燃料的温度也受到容器中的水的控制。
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