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对东风7型机车柴油机运用中气缸盖裂纹情况进行了统计 ,对裂纹原因进行了分析。制定了预防和改进措施 ,并经运用实践证明 ,效果良好
The crack of cylinder head in DF-7 locomotive diesel engine was statistically analyzed, and the cause of the crack was analyzed. The prevention and improvement measures have been formulated and proved to be effective through the application of practices