It shows that when measuring the distribution of electric potential,one should first use probe to connect the directing zero meter and then connect the electric potential different meter and so on.
从边值问题的唯一性定理出发，讨论了常用的两种模拟静电场实验设计方案与取得实验结果的相互关系，指出在模拟模型上测电位分布时，应首先采用探针接指零仪表再接电位差计等的设计方案。
