Urban ecological environment will be influenced by the construction of track traffic at varying degree during construction period and operation period.
轨道交通工程在施工期和运营期对城市生态环境都会产生不同程度的影响。
It is significant to accelerate the construction of urban light track transit system in such circumstance as urban public transit is becoming more and more tight.
论述了目前我国城市交通日趋紧张的情况下，加快城市轻轨交通系统建设的重要意义。
Urban rail transit adopts jointless track that has strict requirements on track deformation during its operation when a tunnel construction is underway under it.
城市铁路为无缝线路，列车正常运营期间进行隧道下穿施工时对线路变形有严格要求。
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