介绍了多方案的研究、比选及专家评审的经过，最后确定采用碎石道床方案。
This paper discusses how to select the competitive schemes and experts opinions, argues that the adoption of the ballast project is a best choice.
介绍了多方案的研究、比选及专家评审的经过，最后确定采用碎石道床方案。
This paper discusses how to select the competitive schemes and experts opinions, argues that the adoption of the ballast project is a best choice.
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