ferromagnetic film

例句：

1. 1. The magnetized ferromagnetic film is used to store data in a compact form.
   这种被磁化的铁磁薄膜用于以紧凑形式存储数据。
2. 2.The ferromagnetic film has been widely used in the manufacturing of magnetic recording devices.
   这种铁磁薄膜在制造磁性记录设备中得到了广泛应用。
3. 3. The ferromagnetic film plays an important role in the field of magnetism and has many practical applications.
   铁磁薄膜在磁场领域起着重要作用，具有许多实际应用。