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红五月农场拥有美国约翰·迪尔公司生产的JD1075H／4联合收割机8台，该机现已使用12个生产周期，其发动机已到故障修理期。因进口零配件货源紧缺，价格昂贵，给发动机的修理带来诸多困难。据测算1台发动机修理或更新需10～15万元。在此情况下，我们对国产柴油机进行选型，最后?
Red May Farm owns 8 JD1075H / 4 combine harvesters manufactured by John Deere Company in the United States. The machine is now running on 12 production cycles and its engine has been repaired. Due to the shortage of imported spare parts, expensive, to the engine repair brings many difficulties. It is estimated that an engine repair or update required 10 to 15 million. In this case, we made a selection of domestic diesel engine, and finally?