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对米轨东方红2 1型机车构架普遍发生的裂纹问题进行调查 ,对裂纹产生的原因进行分析 ,并提出相应的建议。
The crack problems commonly occurred in the frame of Dongfanghong-2 1 locomotive in Mizuoyou were investigated, the causes of cracks were analyzed, and the corresponding suggestions were put forward.