这些中子从核反应堆中产生，在减速剂的作用下减到难以置信的低速。
The neutrons are created in a fission reactor, and slowed to incredibly low speeds by materials known as moderators.
石墨是很好的减速剂，减慢中子并且让它们的反应保持在一个适当的温度范围内。
Graphite is a great moderator, slowing down the neutrons and keeping their reaction in the proper temperature range.
可以把铀做成棒状放在原子反应堆内，在铀棒的四周，围一层中子减速剂即节速剂。
The uranium may be put into the reactor in the shape of rods and the rods surrounded with a neutron-slower or moderator.
可以把铀做成棒状放在原子反应堆内，在铀棒的四周，围一层中子减速剂即节速剂。
The uranium may be put into the reactor in the shape of rods and the rods surrounded with a neutron-slower or moderator .
重水可用作核电厂的减速剂，减缓快速运动的中子以使它们能和反应炉的燃料一起反应。
Heavy water is used as a moderator in nuclear power plants, slowing down the fast neutrons so that they can react with the fuel in the reactor.
重水可用作核电厂的减速剂，减缓快速运动的中子以使它们能和反应炉的燃料一起反应。
Heavy water is used as a moderator in nuclear power plants, slowing down the fast neutrons so that they can react with the fuel in the reactor.
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