magnetic material

• 磁性材料

magnetic material的用法和样例：

例句

1. 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。
2. Rectangular plastic cards coated with magnetic material are employed in this device.
   这种装置使用涂有磁性材料的矩形塑料卡片。