车辆自重 meaning in Chinese

deadweight
kerb weight
payload

With the speed up of railway transportation , the lightening design of vehicle seems to be more and more important . reducing the weight of vehicle can not only reduce the consumption of the raw materials and the power of traction , and increase the operation speed and improve the starting and braking performance of trains , but also has the advantageous to reduce the wheel / rail interaction forces , vibration and noise , increase the service life of the vehicle and the track , and economize the cost of transportation
随着铁路运输速度的提高，车辆的轻量化显得越来越重要，减轻车辆自重，不仅可以减少原材料的消耗，有利于降低牵引功率，提高列车的运行速度，改善列车的启动和制动性能，而且可以有效的减少轮轨间的动力作用，减少振动和噪音，增加车辆和线路的使用寿命，节约运输成本。