dual-grid tube

例句：

1. 1. The dual-grid tube is used in the electronics industry for signal amplification and filtering.
   双栅管在电子行业用于信号放大和滤波。
2. 2. The new dual-grid tube has a higher power efficiency than its predecessors.
   新型双栅管的功率效率比前代产品更高。
3. 3. The dual-grid tube is a critical component in many high-performance electronic devices.
   双栅管是许多高性能电子设备中的关键组件。