Käännöksiä ei löytynyt valitulle kohdekielelle.
| Monikko | trackages |
railway tracks collectively
Common contemporary practice in track construction, featuring well-drained ballast spread level with the tops of concrete sleepers/crossties – Australian National Railways, ca 1982
railway tracks collectively
Section through railway track and foundation showing the ballast and formation layers. The layers are slightly sloped to help drainage. Sometimes there is a layer of rubber matting (not shown) to improve drainage, and to dampen sound and vibration