cathode-ray magnetron

例句：

1. 1.The cathode-ray tube was the first electronic device to be invented.
   阴极射线管是第一个被发明的电子器件。
2. 2. The cathode-ray tube is used in televisions and projectors.
   阴极射线管用于电视机和投影仪。
3. 3.The cathode-ray tube is a crucial component in many scientific experiments.
   阴极射线管是许多科学实验中的关键部件。