这种车轮用一个钢轮箍、一个铝轮心和中间的橡胶似的材料所构成,用于城市交通车上,可能具有较低的噪声和振动性能。直径711毫米的车轮重为136公斤,而同样的全钢轮则为237公斤。钢质轮箍仍保持了钢的磨耗质量,铝质轮心降低了重量,弹性材料用以隔绝噪声和振动。弹性材料是不导电的,如果需要,可在其中埋装一板导线,每轮即能传导1,000安,在10分钟內它的溫升为 This wheel is made of a steel band, an aluminum wheel center and a middle rubber-like material for use in urban transit vehicles, which may have lower noise and vibration characteristics. The wheel of 711 mm in diameter weighs 136 kg, compared with 237 kg for the same all-steel wheel. The steel wheel still retains the wear quality of the steel, the aluminum wheel center reduces weight, and the resilient material isolates noise and vibration. Elastic material is non-conductive, if necessary, can be buried in a plate of wire, which can conduct 1,000 rounds per round, in 10 minutes its temperature rise to