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本文分析了起重机主下挠的原因和所造成的危害,利用预应力矫正法进行修复,在广钢二个分厂都取得较好的效果,在降低成本中有实际意义。
This paper analyzes the main crane under the cause of the torsion and the harm caused by the use of prestressed correction method to repair the two plants in Guangzhou Iron and Steel have achieved good results in reducing costs of practical significance.