bipolar field

例句：

1. 1.The bipolar field is a region with strong electric fields.
   双极场是一个具有强烈电场的区域。
2. 2. The bipolar field is responsible for the movement of electrons in the Earth's atmosphere.
   双极场负责地球大气中电子的运动。
3. 3.The bipolar field is used to study the behavior of charged particles.
   双极场用于研究带电粒子的行为。