A quantum group is a deformation of a given classical group, and is such that no classical space can have it as a symmetrygroup.
量子群是已知经典群的变形,所有经典群都无法将其作为对称群。
2
The three-dimensional symmetry of a macromolecular chain was characterized by the line group. Regularities of packing of macromolecular chains in a space group were shown.
对聚合物晶体中各种高分子链的构象进行了研究,找出了它们的三维对称性,并用直线群来表征。
3
As a liquid, the blue phase shows the 3d-spacegroupsymmetry, just like crystals, which arouses people's interest.