nickel refiner

例句：

1. 1. The nickel refiner is essential for the production of high-quality stainless steel.
   镍精炼器对于生产高质量不锈钢至关重要。
2. 2. The refiner uses a complex process to purify the nickel from the ore.
   精炼器使用复杂的过程来从矿石中提炼出镍。
3. 3.The refiner has been upgraded to improve efficiency and reduce environmental impact.
   精炼器已经升级以提高效率并减少环境影响。