This engineering is in TieSiJu ShiWu high-speed passenger railway SZ - 3 section, constructing zhanghe zhangzhuang DK476 + 758.896 ~ bridge DK479 + 176.896, DK454 + 483.414 ~ DK458 + 058.414 segment of the shop without a frantic jumble rail board coarse and fine tuning and grouting work, totaling laying track board 2351 pieces
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