ferromagnetics

例句：

1. 1.Ferromagnetism is the property of certain materials to be magnetized by an external magnetic field.
   铁磁性是某些材料能够被外部磁场磁化的属性。
2. 2.The discovery of ferromagnetism has revolutionized our understanding of magnetism.
   发现铁磁性的发现已经改变了我们对磁的理解。
3. 3.Ferromagnetism is a fascinating topic in physics and engineering.
   铁磁性在物理学和工程学中是一个引人入胜的主题。