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.
And the researchers say that the rediscovered Russian reflector is particularly useful for studying the moon's liquid core and testing ideas about gravity.
研究者们还表示重新找到的俄国反射器对于研究月球液核并测试有关重力的猜想大有裨益。
3
Represents ferrite core. Reflector can be shown or hidden.