pure magnetic iron

例句：

1. 1.The pure magnetic iron is used in many industrial applications.
   纯磁铁被广泛应用于许多工业应用中。
2. 2.The pure magnetic iron has excellent magnetic properties.
   纯磁铁具有出色的磁性特性。
3. 3. The pure magnetic iron is a crucial component in the manufacturing process.
   纯磁铁是制造过程中的关键组成部分。