elliptic integral of the second kind

例句：

1. 1. Thestudy of the elliptic integral iscrucial for understanding the behavior of curvedsurfaces.
   研究椭圆积分对于理解曲面行为至关重要。
2. 2. The elliptic integral plays afundamental role in the theory of relativity.
   椭圆积分在相对论理论中起着基础作用。
3. 3. In this paper, we will introducethe elliptic integral of the secondkind and its application in engineering.
   在本论文中，我们将介绍第二类椭圆积分及其在工程中的应用。