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超导电性的经验规律对于理想超导体的寻找有指导意义。对于传统超导体,人们研究发现,在过渡元素、合金和化合物晶体中,超导电性只发生在每原子的平均价电子数Z=2-8的范围内。对于晶体还有所谓的三、五、七规律。
The empirical law of superconductivity is of guiding significance for the search of ideal superconductors. For traditional superconductors, it has been found that superconductivity occurs only in the range of average valence number Z = 2-8 per atom for transition elements, alloys and compound crystals. There are so-called three, five, seven laws for the crystal.