This paper describes the study and development of magnesia carbon refractories for DC electric arc furnaces. 本文阐述了直流电弧炉用镁碳质耐火材料的研究及发展。
The scrap must be carefully selected to contain exactly the right ingredient before it is sent into the electric furnace. 废钢在送进电弧炉熔炼前必须先经过仔细挑选，以保证其成分完全符合要求。
