electric element短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 电池 To solve these problems, the concept of region protection is firstly brought forward, and the region electric element protection scheme of the intern- uncial autotransformer is given out. 为解决这些问题，首次提出区域化保护这一概念，并给出自耦联络变压器的区域化电量保护方案。 dictall