cobalt sulfide

例句：

1. 1. The mineral is used in the production of high-performance alloys.
   这种矿物用于生产高性能合金。
2. 2.The cobalt sulfide is a rare and valuable material.
   钴硫化物是一种稀有且有价值的材料。
3. 3. Cobalt sulfide is often used as an additive to improve the performance of batteries.
   钴硫化物常被用作电池添加剂，以改善其性能。