The multi-circle burden distribution practice has been realized on the No. 4 BF belless top at Panzhihua Iron and Steel by the improvement of the top control system.
对攀钢四高炉炉顶控制系统进行改进和完善后，实现了无钟炉顶多环布料。
The multi-circle burden distribution practice has been realized on the No. 4 BF belless top at Panzhihua Iron and Steel by the improvement of the top control system.
对攀钢四高炉炉顶控制系统进行改进和完善后，实现了无钟炉顶多环布料。
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