vacuum electron device

例句：

1. 1. This vacuum tube was the first electronic device invented by Edison.
   这个真空管是爱迪生发明的第一个电子设备。
2. 2.The vacuum tube is widely used in radios and televisions.
   真空管在收音机和电视机中广泛使用。
3. 3. The vacuum tube has been replaced by transistors, but it still holds a place in history.
   虽然晶体管已经取代了真空管，但它仍然在历史上占有一席之地。