pentode discharge

例句：

1. 1. The pentodes in the circuit are responsible for the current flow.
   电路中的五极负责电流流动。
2. 2.In this experiment, we used a pentodes to measure the resistance of the wire.
   在这个实验中，我们使用五极来测量导线的电阻。
3. 3. The pentodes were designed to provide a stable and reliable power supply.
   这些五极设计用来提供稳定可靠的电源供应。