radio frequency pentode

例句：

1. 1. The radio frequency pentode is a device used to transmit signals over long distances.
   射频五管管是一种用于在长距离内传输信号的设备。
2. 2.The radio frequency pentode is widely used in communication systems due to its high efficiency and low noise.
   射频五管管由于其高效率和低噪声而被广泛应用于通信系统中。
3. 3.The radio frequency pentode is an important component of many modern electronic devices.
   射频五管管是许多现代电子设备中的一个重要组成部分。