cathode beam

例句：

1. 1.The cathode beam is used to detect the presence of radiation in the environment.
   阴极束流用于探测环境中的辐射存在。
2. 2. The scientists used a special camera to capture the cathode beam.
   科学家们使用一种特殊的相机捕捉阴极束流。
3. 3.The cathode beam was used to study the behavior of electrons in the material.
   阴极束流被用来研究材料中电子的行为。