metataenite

例句：

1. 1. The steel was made from a mixture of iron and carbon.
   这种钢是由铁和碳的混合物制成的。
2. 2. Metataenite is a type of mineral that is commonly found in rocks.
   铁素体是一种常见的矿物，通常存在于岩石中。
3. 3. The metataenite has a strong magnetic field, which makes it useful for industrial applications.
   铁素体的磁场很强，这使得它适用于工业应用。