electronic switching tube

例句：

1. 1. The electronic switching tube is used to control the flow of electricity in homes and businesses.
   电子开关管用于控制家庭和商业中电流的流动。
2. 2. The electronic switching tube was developed by a team of engineers whowere working on a new type of computer.
   电子开关管是由一组工程师开发的，他们正在研究一种新型计算机。
3. 3.The electronic switching tube is an essential component of many electrical devices, including televisions and computers.
   电子开关管是许多电气设备的关键部件，包括电视机和电脑。