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。
The protection and control system in subway DC power supply systems play a key role in ensuring the safety and reliability of the subway.
地铁直流供电的保护与控制系统对确保地铁的安全可靠运行起着关键作用。
The paper stated the protection technique on the building proximity to the subway execution spot.
文章就地铁工程施工中对建筑物保护方法技术进行了叙述。
This material can be widely used in these areas such as the building decorating, subway passage, ship transportation, fire protection, interior decorating, finery etc.
该材料可广泛的应用到建筑装饰、地铁通道、船舶运输、消防安全、服饰、日用消费品等方面。
Urban subway construction is also busy, the opening of the metro can greatly ease the pressure of road traffic and road traffic jams, and environmental protection very much.
市区的地铁也在如火如荼地建设当中，今后地铁的开通能大大缓减路面交通的压力和路面堵车现象，而且也十分环保。
Urban subway construction is also busy, the opening of the metro can greatly ease the pressure of road traffic and road traffic jams, and environmental protection very much.
市区的地铁也在如火如荼地建设当中，今后地铁的开通能大大缓减路面交通的压力和路面堵车现象，而且也十分环保。
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