首先，根据热传导的基本原理，建立温度场的傅立叶导热微分方程。
Firstly, in the sight of basic principle on conductions of heat, Fourier heat conduction differential equation of temperature field is founded.
建立能量平衡方程、钢坯导热微分方程、氧化层生成线性和抛物线增长的组合方程。
Energy balance equation, differential equation of heat conduction and combination of linear equation and parabolic equation of oxygen-layer forming are established.
用叠加原理求解多层非均匀内热源组合平板稳态导热微分方程组，得出热流量分布公式和温度公式。
The steady heat-conduction differential simultaneous equations of multicomposite plate with nonuniform generation are solved by the superposition principle.
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