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从理论和实机试验两个角度，阐述改造可以提高机器的动力性能、降低燃料费用。所述对喷油器头体进行改造的方法简单、可靠、高效。
From the two aspects of theory and real machine test, expounding the transformation can improve the dynamic performance of the machine and reduce the fuel cost. The method of retrofitting the injector body is simple, reliable and efficient.