所有计算都是基于密度泛函理论(DFT)框架下的第一原理平面波超软赝势方法。
It was performed by adopting the first-principles calculation of plane wave ultra-soft pseudo-potential technology of based upon the Density Function Theory (DFT).
而基于密度泛函理论的第一性原理计算方法，则是计算材料科学的重要基础和核心技术。
The first-principle calculation, which is based on the Density Functional Theory, is playing important role in computational materials.
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