通过水分特征曲线方程对试验数据的拟合，研究了拟合参数随干密度的变化情况。
A equation was used to fit the data of SWCC, and the relation between fitting parameters and dry density was studied.
导出了描述离子密度变化的非线性的能量积分方程。
The nonlinear energy integral equation describing the evolution of ion density has been derived.
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。
The space curvature of neutron density 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.
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