ferrite bar

例句：

1. 1. This ferrite bar is used in the manufacturing process to improve the magnetic properties of the material.
   这种铁氧体棒用于制造过程中，以改善材料的磁性特性。
2. 2. The engineer designed a special ferrite bar to enhance the efficiency of the motor.
   工程师设计了一种特殊的铁氧体棒，以提高电机的效率。
3. 3.The ferrite bar was inserted into the circuit to stabilize the magnetic field.
   将铁氧体棒插入电路中以稳定磁场。