direct electric arc furnace

例句：

1. 1.The direct electric arc furnace is a key equipment in the steelmaking process.
   直接电弧炉是钢铁生产过程中的关键设备。
2. 2. The direct electric arc furnace is used to produce high-quality steel products.
   直接电弧炉用于生产高质量的钢材产品。
3. 3. The direct electric arc furnace has many advantages over traditional furnaces, such as higher efficiency and lower emissions.
   与传统的炉子相比，直接电弧炉具有许多优势，如更高的效率和更低的排放。