This article introduces the construction technological process of a new type of ballastless track, viz. the double-block track and performs a cost analysis of the same.
介绍一种新型无碴轨道形式即双块式无碴轨道的施工工艺过程，并进行造价分析。
This article introduces the construction technological process of a new type of ballastless track, viz. the double-block track and performs a cost analysis of the same.
介绍一种新型无碴轨道形式即双块式无碴轨道的施工工艺过程，并进行造价分析。
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