铁路营业线D12便梁过道安装作业steemCreated with Sketch.holmesian (32)in #photography • 6 years ago 这是在国内某条跑高铁的正线上，封锁施工进行D12便梁安装作业的情况。 为了确保铁路安全，铁路既有线施工至今仍然主要以人工作业为主。 #construction #railway
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