ballasted track meaning in English

石碴路轨
有碴轨道

Analysis on space vibration of ballasted track
有碴轨道结构空间振动分析
Technical standards for the construction of ballast track bed on special line for passenger train
客运专线有碴道床施工技术标准
Ballasted track is the most used track type in ground track of urban mass transit in existing " code for the design of metro "
摘要有碴轨道是城市轨道交通地面线最常采用的轨道结构。