fine furnace black

例句：

1. 1. The finefurnace black is a valuable resource for themetallurgical industry.
   精炼炉黑是冶金行业的重要资源。
2. 2. Thefine furnace black was usedto produce high-quality steel.
   精炼炉黑被用来生产高质量的钢材。
3. 3. The fine furnace black was collected fromthe furnace and then processed into various products.
   从炉中收集的精炼炉黑经过加工制成各种产品。