alkal melting pan

例句：

1. 1. The alkaline melting pan is an essential tool for metal processing.
   碱性熔炼炉是金属加工中不可或缺的工具。
2. 2. The alkaline melting pan is used to produce high-quality steel products.
   碱性熔炼炉用于生产高质量的钢铁产品。
3. 3. The alkaline melting pan is a crucial component in the production process of ferroalloys.
   碱性熔炼炉是铁合金生产过程中的关键组件。