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比时速270km的JR东海新干线“希望号”以及时速300km的法国TGV速度更高的350km/h的JR西日本新一代高速新干线WIN350试验车将于1994年春问世。该500系WIN350电车为了减少空气阻力,头车外观采用尖形、低车顶的新颖美观的设计,更新了过去电车的模式,而且为了减小噪声、振动,达到完全轻量化,车体采用铝合金结构,转向架采用结构简单、轻型的无摇枕转向架。此外,每一辆车的输出功率提高到300系新干线希望号的1.6倍。1～3号车由川崎重工兵库工场制造,3～6号车由日立制作所笠户工场制造。
The JR East Japan’s new generation of high-speed Shinkansen’s WIN 350 test car, which is 270km / h from JR East Sea Shinkansen and 300km / h TGV at 350km / h, will be available in the spring of 1994. In order to reduce the air resistance, the 500-series WIN350 tramcar features a sharp and low-profile aesthetically pleasing design to update the model of the tram in the past. In addition, to reduce noise and vibration and achieve complete weight reduction, the car body is made of aluminum Alloy structure, bogie with simple structure, light without bolster bogie. In addition, the output power of each car increased to 1.6 times the number of hopes of the 300-series Shinkansen. The cars No. 1 to No. 3 were made by Kawasaki Heavy Industries Hyogo Factory and the No. 3 to No. 6 cars were made by Hitachi Plant, Kadoorie Plant.