摘要
国内的大型企业不同程度的存在国产化改造的难题，个别设备在购买初期表现出设备运行性能良好，噪音低，功率大等各种优点，但是当设备老化后体现出了维修不便、配件价格高等突出缺点，本文旨在就一则改造浅谈发动机的升级换代
Abstract
Large enterprises in China have difficulties inlocalization transformation in varying degrees. Individual equipmentsshow various advantages such as good performance, low noise and highpower at the initial stage of purchase. However, when the equipmentsare aged, they show prominent shortcomings such as inconvenience inmaintenance and high price of spare parts. This paper aims at discussing atransformation. Engine upgrading.
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