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进入20世纪90年代以来,围绕铁路“客运提速、货运重载”的需要,机车车辆工业积极开发新技术、新产品,我国铁路运输业正处于技术升级换代的关键时期。从2006年起,杭州机务段首台SS4G电力机车入驻乔司上线运行,掀开我段内燃、电力机车的直流制式向交流制式的过渡,从准高速发展到高速。由于处于转型时期、升级阶段,配属我段电力机车更迭频繁,给物资储备造成很大的压力,积压配件和资金不断增加。则与总公司提出的开源节流,
Since the 90s of the 20th century, the rolling stock industry has actively developed new technologies and new products around the needs of the railway such as “speeding up of passenger transport and overloading of freight transport.” China’s rail transport industry is now at a crucial stage of technological upgrading. Since 2006, the first SS4G electric locomotive in Hangzhou locomotive depot has been put into operation on Qiaosu Line, opening up the transition from DC to AC for electric locomotive and diesel locomotive in I segment, from quasi-high speed to high speed. Due to the period of transformation and upgrading, the frequent replacement of electric locomotives in the metro section has caused great pressure on material reserves and the backlog of spare parts and capital has been continuously increasing. Then with the head office to cut costs,