twin-cathode ray beam

例句：

1. 1.The twin-cathode ray beam was used to scan the entire room.
   双极射线束被用来扫描整个房间。
2. 2.The twin-cathode ray beam was used to detect the presence of radiation in the area.
   双极射线束被用来检测该区域是否存在辐射。
3. 3.The twin-cathode ray beam was used to create a high-resolution image.
   双极射线束被用来创建高分辨率图像。