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详细介绍了美国一些主要的铁路产品供应商、铁路公司及美国铁路协会下属的研究试验部目前正在进行和下一步将进行的研究开发项目的概况，其内容涉及内燃机车交流传动技术、高粘着径向转向架、大功率柴油机、飞轮储能技术，天然气内燃机车，先进的列车控制，新一代制动系统，轴箱轴承，货车转向架，轮／轨润滑，轮／轨型面优化，车辆故障检测和预防，人机工程学，环境保护等。
This paper gives an overview of research and development projects currently underway and to be carried out by some major U.S. railway product suppliers, railway companies and research and test departments under the American Railway Association. The contents of the research include: AC drive technology, high adhesion diameter High-power diesel engines, flywheel energy storage technologies, natural gas diesel locomotives, advanced train controls, next-generation brake systems, axlebox bearings, truck bogies, wheel / rail lubrication, wheel / rail profile optimization, Testing and prevention, ergonomics, environmental protection and more.