jointed track
... 有碴轨道 ballasted track 有缝线路 jointed track 右开道岔 right hand turnout ...
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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。
Urban rail transit adopts jointless track that has strict requirements on track deformation during its operation when a tunnel construction is underway under it.
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