electron beam aperture

例句：

1. 1.The electron beam aperture is crucial for the operation of the particle accelerator.
   电子束孔对于粒子加速器的运行至关重要。
2. 2. The researchers have developed a new technique to increase the electron beam aperture.
   研究人员已经开发了一种新的技术来增加电子束孔。
3. 3. The electron beam aperture is used in various applications such as imaging and material analysis.
   电子束孔在成像和材料分析等应用中被使用。