Necessary Upgrades - With almost any upgrade to a vehicle there are usually repercussions to changing something from stock to aftermarket, whether good or bad.
必要的升级-几乎与任何升级到车辆有通常反响，改变了一些股票，以售后市场，无论是好还是坏。
2
Rolling stock dynamics, vibration and multi-disciplinary research of running side by side of control are the front subject of solving the vehicle vibration problem at present.
机车车辆动力学、振动和控制的多学科的并行研究是当前解决车辆振动问题的前沿课题。
3
Control vehicle vibration whether rolling stock raise speed and improve key technology of stationarity their one of.