concentric spherical mesh grid electron gun

例句：

1. 1. The concentric spherical meshgrid electron gun is used in the manufacturingprocess to ensure precision and efficiency.
   同心球面网格电子枪在制造过程中用于确保精确性和效率。
2. 2. The electron gun is acrucial component of the electron microscope, allowingfor high-resolution imaging.
   电子枪是电子显微镜的关键部件，能够实现高分辨率成像。
3. 3. In this study, we used aconcentric spherical mesh grid electrongun to analyze the chemical composition of thesample.
   在本研究中，我们使用同心球面网格电子枪来分析样品的化学成分。