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分析了本钢5号高炉原料称量系统改造前存在的欠缺及其产生的原因，并叙述了称量系统引入PLC之后，为克服这些欠缺所采取的措施。
The defects existing in the raw material weighing system of Bengang No. 5 blast furnace before the reconstruction and the causes of the defects were analyzed. The measures taken to overcome these shortcomings after the introduction of the weighing system into the PLC were described.