triple-pole

例句：

1. 1. The three-pole antenna is used to receive signals from all directions.
   三极天线用于接收来自所有方向的信号。
2. 2. The three-pole switch is a common device in electrical circuits.
   三极开关是电气电路中常见的设备。
3. 3.The three-pole generator provides power for the entire city.
   三极发电机为整个城市提供电力。