如果你们数的话，原子核的数是，我们用它乘以πr的平方，得到横截面积，除以1。
So, the number of nuclei, 119 if we were to sit and count these as well, is 119. So, we'll multiply that by just pi, r squared, to get that cross-section, and divide all of that by 1 .
通过分析和计算锕系核裂变截面和全套中子反应截面获取了一组锕系核的裂变位垒参数。
The fission barrier parameters for actinide nuclei were obtained by analysis and calculations of fission cross-sections and complete neutron reaction cross sections.
FITLINK是NDFMPS堆芯核设计和燃料管理程序系统的主要程序之一，是一个组件截面参数处理程序。
FITLINK is one of main programs of NDFMPS that is core nuclear design and fuel management program system, and is a treatment program of cross section parameter of fuel assembly.
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