pole armature

例句：

1. 1. The new design of the car has a pole armature that is more energy efficient.
   这款汽车的新设计采用了更高效的极杆式电枢。
2. 2.The scientist used a pole armature to measure the strength of the magnetic field.
   科学家使用极杆式电枢来测量磁场的强度。
3. 3. The pole armature plays a crucial role in the operation of the electric motor.
   极杆式电枢在电动机的操作中起着至关重要的作用。