The present paper discussed some possible translational types in detail, and derived the elements of the pseudo-symmetry for the low symmetry crystal systems (74 space groups).
本文着重分析了可能出现的平移赝对称形式,并以低级晶系所属的74个空间群为例导出了赝对称形式。
2
The author attempts to illustrate that the order-disorder ofcrystal structure, and the isomorphism may be explained by the conception of colour symmetry.
用有色对称的理论解释了晶体结构中的有序-无序和某些类质同像替换等现象。
3
The form of a four-rank tensor with the particular intrinsic symmetry for a variety ofcrystalsymmetry is given by the use of the group theory method.