magnetic substance的用法和样例：
例句
- The self-magnetization and the magnetic domains are two basic properties of the ferromagnetic materials.
自发磁化和磁畴结构是铁磁性物质的两个基本特点。 - The hard disk is covered with a thin coat of magnetic material.
硬盘被一层薄薄的磁性材料覆盖着。 - This paper studies the derivation of a qualitative description for the magnetization curve of saturable magnetic materials.
摘要本文针对饱和磁性材料，推导其磁化曲线的定性描述。
