duo triode

例句：

1. 1.The duo triode amplifier is used in high-frequency applications.
   双三极管放大器用于高频应用。
2. 2. The BJT amplifier is widely used in electronic devices.
   BJT放大器在电子设备中广泛使用。
3. 3.The triode amplifier has been replaced by the bipolar junction transistor (BJT) in many applications.
   在许多应用中，三极管放大器已被双极结晶体管