iron spinel

例句：

1. 1. Iron spinelis a type of mineral that is usedin the production of magnetic materials.
   铁氧体是一种用于生产磁性材料的矿物。
2. 2. Theiron spinel was found to have excellentthermal conductivity.
   这种铁氧体被发现具有极好的热传导性。
3. 3. Theiron spinel was usedas an anti-rust agentin the manufacturing process.
   这种铁氧体被用作生产过程中的防锈剂。