... separation of boundary layer 边界层分离 separation of traffic 分道通航 separation of two frequencies 双频间隔 ...
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These tiers could categorize methods of operation in conjunction with safety improvements such as separation of passenger and freight traffic and advanced train control systems.
这些安全措施包括将客运流量与货运流量隔离，升级列车控制系统等。
Passenger vehicle one-way control, separation of the entrance and exit, benefit for reducing the pressure on the surrounding traffic.
客运车辆单向控制，出入口分离，有助降低周边交通压力。
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