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。
Density Functional Theory is a very useful theoretical method to study this kind of materials.
而密度泛函理论就是一种很有效的研究纳米器件的理论方法。
Reaction energy was always estimated by Group additivity method and density functional theory.
反应能量主要采用原子团加和方法以及密度泛函理论进行估算。
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