铸钢及熔炼题目作者大型铸钢件外冷铁的研究………………………宋维德戴忠显等电弧炉炼钢降低用电单耗的几点体会………………………………．·:赵显文等点热阻法在铸钢工艺C厶D上的应用…………………………………张宗炜等期(类型不符) Casting and melting topic Author Large-scale steel castings outside the cold iron ........................... Song Weide Dai Zhongxian EAF steelmaking to reduce electricity consumption of a few experience .............................. .... ·: Zhao Xianwen and other points of thermal resistance method in cast steel C 厶 D application ....................................... Zhang Zongwei period (type does not match)