Neutron lifetime is the time in which the thermal neutrondensity falls to half.
中子寿命是指热中子密度降至一半所用的时间。
2
The space curvature of neutrondensity of this solution is changed according to the changes of reactor power, so it is more precise than the analytic solution of point reactor model.
此解的中子密度空间分布曲率是随堆功率变化的，因此它比点堆模型方程的解析解精确。
3
When superposing neutron porosity log with density porosity log, density porosity is far higher than neutron porosity.