The control rods are in fact placed outside of the core. What you also see in this design is that there's graphite, a lot of graphite which is the graphite reflector for this core.

控制棒事实上是在核心的外边，你们能在这个设计中看到的是，这有石墨，很多的石墨，那就是核心的石墨反射物。

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The effects of impurities in the fuel and the graphite element in the core and those in the reflector graphite on the reactivity of the reactor were considered in detail.

还详细考虑了堆芯燃料球和石墨球以及反射层石墨中杂质对反应性的影响。

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