Kirchhoff integral theorem

例句：

1. 1.The Kirchhoff integral theorem is a fundamental principle in electrical engineering.
   柯赫霍夫积分定理是电气工程中的基本原理。
2. 2.In the study of electromagnetic waves, the Kirchhoff integral theorem plays a crucial role.
   在电磁波研究中，柯赫霍夫积分定理起着至关重要的作用。
3. 3. The Kirchhoff integral theorem has been extensively used in various fields of science and technology.
   柯赫霍夫积分定理在科学和技术的各个领域得到了广泛应用。