The model of a railway bridge.
轨道桥梁的模型。
A small model of a modern railway station.
一件袖珍模型展示了现代车站实况。
Road vehicles. Railway transportation. Full sized model.
道路车辆。铁路运输。全模型尺寸。
The utility model relates to a special helmet for railway rescue.
本实用新型涉及到一种铁路救援队员专用的头盔。
The utility model is applied in the high speed heavy load railway transportation field.
本实用新型应用于铁路高速重载运输领域。
Study on a general optimization model and its solution for railway network train diagram;
单线区段列车运行图初始布点是列车运行图优化的一个关键问题。
Study on a general optimization model and its solution for railway network train diagram;
单线区段列车运行图初始布点是列车运行图优化的一个关键问题。
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