The passenger flow is taken as the basis of the railway operation organization and its size and distribution decides the operation organization scheme of whole system.
客流作为轨道交通运营组织的基础，其大小和分布特征决定了整个系统的运营组织方案。
2
The control and protection system in DC power distribution systems plays a very important role in ensuring the mass transit railway safe and reliable operation.
直流供电的控制和保护系统对确保轨道交通的安全、可靠的运行，具有举足轻重的作用。
3
This paper takes Mike Porter's value chain as its main tool to study the operation of the inner-railway oil supply and distributionsystem.