论文首先对国外高速铁路运营和维修管理模式进行了认真的研究分析，并从中得到了启示。

First, in this paper, conducted serious research and analysis on the relevant informations about the foreign high-speed railway operation and maintenance management model.

youdao

论文首先对国外高速铁路运营和维修管理模式进行了认真的研究分析，并从中得到了启示。

First, in this paper, conducted serious research and analysis on the relevant informations about the foreign high-speed railway operation and maintenance management model.

youdao