The finite difference method is used to calculate the multi dimensional diffusion of hydrogen isotopes in materials. 研究了氢同位素在材料中多维扩散行为的有限差分计算方法。
The differential calculation formulas of the temperature field and the temperature gradient are presented for large scale hoctonspheres annealing with non-stationary heat transfer. 提出了大型球罐热处理在非稳态传热状态下的温度场差分计算公式和温度梯度计算公式。