我国铁路客货车辆技术水平近10多年来有了很大进步。但与国外先进水平相比，在技术指标、产品质量、车型品种、舒适度方面还有很大差距，需要作很大努力。亚客车1.1构造速度客车的构造速度一般是它的最高运动速度。近年来，国外铁路发展高速列车的势头很强，最高运动速度已达35 China’s railway passenger and freight vehicle technology has made great strides over the past 10 years. However, compared with the advanced level in other countries, there is still a long way to go in terms of technical indicators, product quality, vehicle type and comfort, and great efforts are needed. Passenger car 1.1 Construction speed Bus construction speed is generally its maximum speed of movement. In recent years, the development of high-speed trains in foreign countries has been very strong with a maximum speed of 35