1) Molecular point group
分子点群
1.
The paper reports a program for showing a systematic procedure of determination of molecular point groups, determining molecular point groups with man-machine interaction, showing character tables of the molecular point groups, and drawing all symmetry elements on three-dimensional molecule structure figures.
本文报导的计算机程序，可显示确定分子点群的系统步骤，通过人机对话辅助确定分子点群，显示点群的特征标表，并可在分子结构立体图上绘出全部对称元
2.
The design and expression of computer three dimensional animation for the molecular point group were studied.
探讨了采用计算机三维动画和多媒体技术描述分子点群的表达方法。
2) focal subgroup
焦点子群
1.
Abstract; By investigating the structure of the focal subgroup of a Hall subgroup we obtain some results concerning with TT -quotient groups.
通过引入强Dπ-群的Hallπ-子群的驯交与相关的概念并应用于转移理论和焦点子群的讨论,得到若干关于π-商群的结果。
3) cluster analysis
点群分析
1.
Study of geochemical classification of the Salt Lake in the Qaidam Basin applying cluster analysis;
应用点群分析研究柴达木盆地盐湖的地球化学分类
4) Point clouds classification
点群分类
5) Locus grouping
位点分群
6) permutation group
点稳定子群
1.
Small order of stable subgroup of point of limited and primitively permutation group;
小阶数点稳定子群的有限本原置换群
补充资料：点群(pointgroup)
【点群】(pointgroup)亦称“对称型”。晶体中全部对称因素的总和。晶体共有32种不同的对称型。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条