The structure of preform is described, the processing parameters are predicted in theory and the designs of functional and structural composites are provided by the method of topological analysis.
本文用拓扑分析方法，对预制件结构做了说明，并对工艺参量进行了理论预测，为设计功能复合材料和特殊结构复合材料提供了新的手段。
Based on the fractal theory, the paper expounds the structural fractality, process fractality and functional fractality in enterprise system.
根据分形理论，分析了企业系统中存在的结构分形、过程分形及功能分形特征。
The structural stabilities and electronic structures of W atomic chains are studied by employing first-principles plane wave pseudopotential method based on the density functional theory.
使用基于密度泛函理论的第一原理平面波赝势法，研究了W原子链的结构稳定性和电子结构性质。
The structural stabilities and electronic structures of W atomic chains are studied by employing first-principles plane wave pseudopotential method based on the density functional theory.
使用基于密度泛函理论的第一原理平面波赝势法，研究了W原子链的结构稳定性和电子结构性质。
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