指出它们均具有C_ (2v)局部对称性，并从晶体场点电荷模型出发对具有C_ (2 v)对称性点群的分子进行了配位场半定量计算。
They belong to C_ (2v) local symmetry. From the point of view of point-charge model the ligand field semi-quantitative calculation is applied to molecules with C_ (2v) point group symmetry.
采用这个模型，能用电子全息法观测由该点电荷所形成的静电场分布及荷电量的大小。
With the field model, the electrostatic field distribution were observed and the magnitude of the charged quantity is determined by electron holography.
采用这个模型，能用电子全息法观测由该点电荷所形成的静电场分布及荷电量的大小。
With the field model, the electrostatic field distribution were observed and the magnitude of the charged quantity is determined by electron holography.
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