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铁路与公路建筑工程主要包括新线建筑与旧线改建两个部份。无论新线建筑或旧线改建，和其他工程一样，在建造过程中分为设计与施工两个阶段。。从设计到施工整个过程都需要大量而频
The railway and highway construction projects mainly include the two parts of the new line construction and the reconstruction of the old line. Regardless of the reconstruction of the new line or the old line, like other projects, it is divided into two stages of design and construction during the construction process. . The entire process from design to construction requires a lot of frequency