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有一时期,我场东方红-75型拖拉机的喷油泵柱塞副和喷油器频繁磨损。这一异常现象引起了我们的重视。经对13台拖拉机柴油
In a period of time, my field Dongfanghong -75 tractor fuel pump plunger and injector frequent wear and tear. This anomaly caught our attention. After 13 tractors diesel