两个主要表征群的分类结构和各自所包含的类群基本相应于前人研究中本属两个组的属下处理。
The taxonomic structure of two groups and taxa included in each of them are consistent with section division made by previous researches.
利用二色直线群表征了某些聚合物分子链的对称性；
Some ordered macromolecular chains in polymer crystals were characterized by dichromatic line groups.
本研究提出了微孔曝气最优气泡群的确定方法，并采用最大气泡群常数终值来表征该气泡群。
This paper puts forward the calculation of optimal bubble group and uses maximum bubble group constant to evaluate this group.
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