片语
permanent way machine线路机械
cost control for permanent-way工务成本管理
permanent way tool线路机具
railway permanent way management铁路工务管理
permanent way machellone路线机械
permanent way institutionThe Permanent Way Institution is a specialist society interested in the dissemination of railway permanent way knowledge and techniques amongst interested parties at all levels from the trackmen to the civil engineer It was founded in 1884 and now has over 7500 members throughout Commonwealth of Nation
permanent-way work工务工作
permanent way clearing machine线路清理机械
permanent t way永存性公路