It is proved by fractal theory that the welded state of every micro zone at welded surface is uneven in the formation process of isothermal superplastic solid-state welding joint.
这也从分形理论的角度证明了在超塑性固相焊接头的形成过程中，焊接面各微区的焊合状态是非均匀性的。
The fractal theory was introduced into the gas solid catalytic reaction system to describe the influence of the surface irregularity of catalyst on the gas solid catalytic reaction.
利用分形维数定量表征催化剂的形状不规则程度，对其中进行的气-固相催化反应进行了分析计算。
Furthermore, we investigated the thermal conductivity in the mixed system. Found that the thermal conductivity changed with the solid fraction, structural character parameter and fractal dimension.
并以此研究了混合颗粒系统中的热传导，研究发现此混合系统的有效热导率将随着固体体积百分比，系统结构特征参数和分形维数的变化而变化。
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