vycor tube

例句：

1. 1. This vycor tube is used in the production of high-frequency radio waves.
   这个真空管用于生产高频无线电波。
2. 2. The vacuum tube was a revolutionary invention that changed the way we communicate.
   真空管是一种革命性的发明，改变了我们交流的方式。
3. 3. The vycor tube was the first electronic device to produce sound.
   真空管是第一个产生声音的电子装置。