triode-pentode

例句：

1. 1.The electronics engineer designed a new triode for the company's new product line.
   电子工程师为公司新产品线设计了一种新型三极管。
2. 2. The pentode is used in various applications such as audio amplification and signal processing.
   五极管在音频放大和信号处理等应用中被使用。
3. 3.The design of the transistor has greatly improved the efficiency of the device.
   三极管的设计大大提高了该设备的工作效率。