Based on the discreteness of electric charge, the influences of an external magnetic filed on the persistent current of the mesoscopic coupling metallic rings a re investigated.
在考虑电荷是量子化的基础上，研究了外加磁场对介观耦合金属环中持续电流的影响。
2
The characteristics and application effects of various metalliccharge for electric arc furnace are presented in this article.