介绍了城市轨道交通不同信号闭塞方式及其追踪列车间隔时间的计算方法，建立了多列车追踪运行的仿真系统，并进行了算例的设计。
This paper introduces different signal block modes and the method which was used to calculate tracking intervals between trains, and establishes simulation system for multi-train tracking.
病人们可能会死亡，但我告诉你们，Patients,can,die，but, I，团队也有可能死亡，只是方式不同，这时的领导人都是闭塞，不诚实。
Ll submit to you that teams can die, a different type of death perhaps, when the leader is not open and honest.
针对我国传统的继电联锁方式的铁路信号自动闭塞系统，文章介绍了一种基于计算机联锁方式的改进方案。
In this paper an improved solution based on computerized interlocking is proposed against the traditional re-lay-interlocking-model automatic block system in railway signalling in our country.
目的探讨不同近肾腹主动脉闭塞和（或）合并有其他部位血管疾病的患者的合理手术方式。
Objective To study the rational surgical approaches for patients with juxtarenal abdominal aortic occlusion, with or without combined vascular regions of the body.
目的探讨不同近肾腹主动脉闭塞和（或）合并有其他部位血管疾病的患者的合理手术方式。
Objective To study the rational surgical approaches for patients with juxtarenal abdominal aortic occlusion, with or without combined vascular regions of the body.
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