TEM wave

例句：

1. 1.The TEM wave is a type of electromagnetic wave that travels through a vacuum.
   TEM波是一种通过真空传播的电磁波。
2. 2.In the study of radio waves, the TEM wave is a fundamental concept.
   在无线电波研究中，TEM波是一个基本概念。
3. 3. The TEM wave has been used in various applications such as radar and communication systems.
   TEM波已被用于雷达和通信系统等多种应用。