Helium doubly excited states is the prototype systeam for the study of electron correlation.
氦原子双激发态是理解原子中电子关联的典型基本态。
The influence of intramonomer electron correlation on and was also found to be remarkable in the dimer system.
在硝酰胺二聚体中，分子内的电子相关效应对和的影响很显著。
Porphine structures are fully optimized by using MP2 and two kinds of DFT methods considering electron correlation.
用考虑电子相关的MP2和2种DFT方法，在不同的基组下对卟吩结构全优化。
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