| 摘要 |
FIELD: transport.SUBSTANCE: at running on trackway, sand is added to rails. At running on curved section, sand is added, first, on one outer trackway, or its is added only to one trackway and, then, at rerun on said curved section it is added to the other trackway, or sand is added, first on one trackway and, then, to the other as it wears.EFFECT: longer life of tracks and rolling stock.2 cl, 1 dwg |
