There are definite referenced value for design and running of subway power supply system.

对地铁供电系统的设计和运营具有一定的参考价值。

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There are many contradictions between advanced technical equipments and relative obsolete management mode for operation and overhaul in subway power supply system of Guangzhou.

广州地铁供电系统较先进的技术装置与相对陈旧的运行、检修管理方式之间存在着诸多矛盾。

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With the rapid development of subway, it is necessary to consummate the protection for DC traction power supply system.

随着城市地铁的大力发展，研制更加完善的直流保护正是应时之需。

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