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为满足扩编旅客列车和提高运营经济性要求,上海铁路局受铁道部机务局的委托,分别与铁道部科学研究院机辆所和铁道部大连内燃机车所签定了“ND_2型内燃机车技术改造合同”。经一年来的试验研究与装车考核,两台改造机车技术性能指标均达到了合同要求。为检验机车技术改造的效果,铁道部机务局还组成了“ND_2型机车技术改造验收测试组”,于
In order to meet the requirements of expanding passenger trains and improving operational economy, the Shanghai Railway Bureau was entrusted by the Bureau of Railway Bureau and the Bureau of Machinery Industry of the Ministry of Railways and the Dalian Diesel Locomotive Station of the Ministry of Railways respectively to sign the Technical Renovation of ND_2 Diesel Locomotive contract“. After a year of test research and loading assessment, two modified locomotive technical performance indicators have reached the contract requirements. In order to test the effect of technological transformation of locomotives, the Ministry of Railways Bureau of Bureaus also formed the ”ND 2 locomotive technological transformation acceptance test group"