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在我国铁路电气化建设中，整体吊弦、接触网上部施工四个一次到位施工工艺的使用，提高了现场施工的工效。同时，由于将占用线路施工的部分工作内容通过计算转换为工厂化预配，减少了施工占用线路的时间。因此，四个一次到位是电气化铁路施工技术水平的一次飞跃。能否象上...
In the electrification of our country’s railway, the construction of the whole suspension wire and the construction of the upper part of the contact net is used in one time, which improves the work efficiency of the construction on site. At the same time, due to the occupation of line construction part of the work content is converted to factory-based pre-allocated, reducing the occupation of the construction line time. Therefore, the four in one place is a leap in the technical level of electrified railway construction. Can it be like ...