It is also one portion of the automation systems of power supply for the mass transit railway.

同时它也是轨道交通供电自动化系统的一个组成部分。

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In the inner harbour, they are a supplementary mode of transport to cross harbour buses and the Mass Transit Railway.

至于港内交通方面，则是隧道巴士和地下铁路以外的辅助交通工具。

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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。

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But all those potential bonanzas could be derailed if Mass Transit Railway stock goes off track.

CNN: Hong Kong Packs the Train

July was in fact a postponement from April -- and the later date did matter to the Mass Transit Railway.

CNN: A Date with Disaster

As such, the Mass Transit Railway (MTR) added platform safety doors to all of its 84 stations, finishing the multi-year construction project in 2011.

BBC: Subway systems by the numbers