grid-controlled vacuum tube

例句：

1. 1. The grid-controlled vacuum tube is used in power transmission systems to transmit high voltage signals.
   网格控制真空管用于电力传输系统中，用于传输高电压信号。
2. 2. The grid-controlled vacuum tube is a critical component in the operation of modern electronic devices.
   网格控制真空管是现代电子设备运行的关键部件。
3. 3. The grid-controlled vacuum tube was developed by scientists to improve the efficiency of power transmission.
   网格控制真空管是由科学家开发出来的，目的是为了提高电力传输的效率。