Taking one-dimensional diffusing equation as the object of study, a method of undetermined coefficients was given. Then gave two examples and analyzed their stability and truncation error.
针对一维扩散方程，给出一种新型差分格式的待定系数法，并以两种新型差分格式为例进行稳定性和截断误差分析。
Diffusion bonding results indicate that the interface situation is different merely by a cold drawing and then a diffusing process.
研究结果表明，冷变形后不同温度下扩散处理的复合界面状况存在差异。
Moreover, diffusing thickness in unit time of active atom tin increased with the temperature firstly and then decreased with the time at the same temperature.
而单位时间内锡原子扩散厚度随温度升高增长较快，同一温度下单位时间内锡原子扩散层随时间增加呈现先增加后减小的趋势。
Moreover, diffusing thickness in unit time of active atom tin increased with the temperature firstly and then decreased with the time at the same temperature.
而单位时间内锡原子扩散厚度随温度升高增长较快，同一温度下单位时间内锡原子扩散层随时间增加呈现先增加后减小的趋势。
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