polar set

例句：

1. 1. The researchers found that the polar set of the data had a significant impact on the results.
   研究人员发现，数据极点集对结果有显著影响。
2. 2.In mathematics, a polar set is a set of points in a plane that lies at the same distance from a given point.
   在数学中，一个极点集是平面上的一个点集，它们与给定点的距离相同。
3. 3.The polar set of the complex numbers consists of all real numbers that can be expressed as a sum of two squares.
   复数的极点集包含所有可以表示为两个平方和的实数。