旅客运输需求是我国铁路客运专线运输组织与经营管理的基础。

Passenger transport demand is the basis for transport organization and operation of PDL.

youdao

旅客运输需求是我国铁路客运专线运输组织与经营管理的基础。

Passenger transport demand is the basis for transport organization and operation of PDL.

youdao