Points of knowledge: selection of single reactor and the most optimum operating temperature, selection of reactor type for the complex reaction.

知识要点：单一反应反应器的选型与最优操作温度的确定，复合反应反应器的选型。

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The result is a profile that is often characteristic of a particular type of reactor or centrifuge, and sometimes of an individual machine—and can also indicate how long ago the processing took place.

这种结果反应出了经常是一种特别类型的核反应堆和离心分离机的特性，有时是独特机器的特性，也能显示这种过程会发生多久。

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It's a calandria type reactor.

这是一个压力排管式的反应堆。

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That reactor type is not ideal for producing weapons-grade plutonium, but all reactors produce plutonium that could be used in a nuclear explosion.

BBC: Yongbyon restart: North Korea ramps up nuclear tension

Two kinds of nuclear plants are most likely to be affected by the accident those of similar reactor type and those that also are located in coastal areas near earthquake faults.

WSJ: Nuclear Industry Likely to Reassess Safety Systems

Currently, U.S. utilities are seeking permission to build about a dozen of the AP1000 reactors, far more than any other reactor type in the U.S. Nearly a dozen projects that had contemplated using designs developed by competing firms, such as General Electric Co.

WSJ: NRC Approves Toshiba Reactor Design