Bessel function

例句：

1. 1. The Bessel function is a fundamental tool in the study of complex numbers.
   贝塞尔函数是研究复数的基本工具。
2. 2. In mathematics, the Bessel function plays a crucial role in solving differential equations.
   在数学中，贝塞尔函数在解决微分方程中扮演着至关重要的角色。
3. 3.The Bessel function has been used to model various physical phenomena, such as wave propagation and fluid flow.
   贝塞尔函数已被用来模拟各种物理现象，如波传播和流体流动。