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欧洲南部的山区地形能引起货车的严重损伤，特别是在走行部的恒速制动时尤为突出。法国国营铁路（ＳＮＣＦ）和华尔顿已生产出一种适用于轴重２５ｔ的车轮，能同时提高安全性和使用寿命。
The mountainous terrain in southern Europe can cause serious damage to the truck, especially during constant speed braking of the running gear. SNCF and Walton have produced a wheel that is suitable for a 25t axle load, improving both safety and service life.