vacuum breakdown

例句：

1. 1.The vacuum breakdown voltage is critical for the operation of this vacuum tube.
   真空击穿电压是这个真空管操作的关键。
2. 2.During the vacuum breakdown, the electric field in the vacuum tube becomes intense.
   在真空击穿期间，真空管中的电场变得非常强烈。
3. 3. The vacuum breakdown voltage can be affected by various factors such as temperature and pressure.
   真空击穿电压可以受到温度和压力等多种因素的影响。