magnetic substance的用法和樣例：
例句
- The self-magnetization and the magnetic domains are two basic properties of the ferromagnetic materials.
自發磁化和磁疇結構是鐵磁性物質的兩個基本特點。 - The hard disk is covered with a thin coat of magnetic material.
硬盤被一層薄薄的磁性材料覆蓋著。 - This paper studies the derivation of a qualitative description for the magnetization curve of saturable magnetic materials.
摘要本文針對飽和磁性材料，推導其磁化曲線的定性描述。
