山区铁路用轨道车
rail car for mountain railway
铁道轮轨黏着系数
railway wheel-rail adhesion coefficient
铁水轨道衡
track scale of molten iron
同济大学城市轨道与铁道工程系
Department of Urban Track and Railway Engineering
tongji university
无碴轨道高速铁路
ballastless track high-speed railway
无碴轨道铁路
ballastless track railway
无砟轨道铁路
ballastless track railway
赤道轨道卫星
satellite equatorial orbit