Due to the special natural and geographical environment and line conditions, some stricter requirements for the train braking system are needed to ensure the safe train operation.
由于青藏铁路特殊的自然地理环境和线路条件，为保证列车安全运行，对列车制动系统必须有更高的要求。
The railway signal power supply is the key device to ensure the safe and normal operation of the train.
铁路信号电源是保证列车安全正常运行的关键设备。
As the speed increases, the traditional train control system can not meet the requirement of the high speed railway and high density safe operation.
随着车速的提高，传统的列车控制系统已不能满足高速铁路高速度、高密度安全运行的要求。
Metro train is one of the most important components of urban rail transit, and scientific maintenance of metro train is the first priority to ensure the safe operation of URT.
科学地对城市轨道交通的车辆进行维护和保养是确保城市轨道交通安全运行的首要条件。
Train, inspect supervise Manufacture Department at Sanya Site safe production work, assure the safe production operation.
培训、检查、监督三亚厂区制造部安全生产工作，确保三亚厂区制造部的生产活动安全进行。
Train, inspect supervise Manufacture Department at Sanya Site safe production work, assure the safe production operation.
培训、检查、监督三亚厂区制造部安全生产工作，确保三亚厂区制造部的生产活动安全进行。
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