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。
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。
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).
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