cathodic sensitivity of photomultiplier tube

例句：

1. 1. The cathode-ray tube is sensitive to light.
   阴极射线管对光敏感。
2. 2. Thecathode-raytube has a high sensitivity.
   阴极射线管灵敏度高。
3. 3. The cathode-ray tube is used inmany scientific experiments.
   阴极射线管在许多科学实验中被使用。