5NELSON J T. Wheel/rail noise control manual[ R]. Washington D C: Transportation Research Board, 1997.
6KOO D H, KIM J C, YO0 W H, et al. An experimental study of the effect of low-noise wheels in reducing noise and vibration [ J ]. Transportation Res : Part D : Transport & Environ, 2002, 7 (6) : 429-439.