1. The fire in the furnace warms this cold air. 炉灶里的火对进来的冷空气加热。
2. This paper introduces the circumstances of the debugging and design for annular tempering furnace in the production line of the wheel. 介绍了车轮生产线上环型回火炉的设计和调试运行情况，推出了大型环形回火炉新炉型。
3. Through optimizing the process, LC FeMn with [C]<0. 5% was batch processed on the basis of pre 在炉外预精炼的基础上，通过工艺过程的优化，批量生产出含碳小于0。5％的低碳锰铁，并取得较为理想的经济指标。
英英解释
n.
1. an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ore
