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法国国家铁路公司（SNCF）的研究人员与车辆工程师正在研制三节高速双层客车，其车体与转向架构架均采用合成材料，其目标是把车辆自重减少25％，而把轴重由17吨减到16吨。如果所有的许多技术难题都得以解决，到2000年，时速350公里的合成材料高速车辆即可载客行驶在TGV高速路
Researchers and vehicle engineers at SNCF are developing three high-speed double-decker buses with a composite body and bogie frame that aims to reduce the deadweight of the vehicle by 25% and to reduce the axle weight by 17 tons Reduced to 16 tons. If all the many technical problems are solved, by the year 2000, 350 kilometers per hour of synthetic high-speed vehicles can carry passengers traveling on the TGV highway