The LS coupling representation of electron -ion system is used, the exchange effect is taken into account and the angular factors of collision matrix elements are treated in detail.
其中采用了电子与离子系统的LS耦合表象，考虑了交换效应，仔细处理了碰撞矩阵元的角部分因子。
2
A definition of DNA curvature has been made. The transformation matrix involving the angular parameters relating successive base-pair steps has been used to investigate the DNA curvature.
给出DNA宏观弯曲的定义，使用联系碱基对梯阶间的变换矩阵计算宏观弯曲。
3
Discretization in angular coordinate is needed only and the global equation is a second order characteristic matrix equation.