摘要
本文从物理学和化学的观点将晶体结构的中心对称度与物理性质之一的晶体粉末倍频效应联系起来,得到它们间的定性(或半定量)的基本规律:晶体的中心对称度高,粉末倍频效应小,反之,粉末倍频效应就大.
From viewpoint of Physics and Chemistry, we relate the degree of centrosymmetry in the crystal structure with the powder secondary harmonic generation (SHG) -a physical property and obtain a qualitative law between them. That is, the higher the centrosymmetric degree, the smaller the powder SHG, arid vice versa.
