This chart gives you a summary of some of the critical thermal-neutron cross sections of important fissile and fertile nuclides.

这个图表给你们一个重要的,可裂变和可转换核素的,一些临界热能中子横截面的总结。

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We can then look at uranium 238 which has a relatively low absorption thermal energy range and essentially has no fission cross section which is why we call uranium 238 a fertile atom.

我们能看看铀238，它有一个，相对低的吸收热能范围，基本上没有裂变横截面，那就是为什么我们称铀238为可转换核素。

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