China is the first and only country to have commercial high-speed train service on conventional rail lines that can reach a top operational speed of 350 km/h.
中国是第一个也是唯一一个在传统轨道线路上，拥有最高运营时速达到350公里的商业高速列车运行服务的国家。
China is lowering the operating speeds on its new bullet train lines because of safety and affordability concerns over the largest high-speed rail network in the world.
作为世界上最大的高铁网络的安全以及支付能力的考虑，中国正在降低新子弹头列车的行驶速度。
The company has some of the world's leading production lines of thin strips, high-speed wires, train wheels and steel H-beams.
公司拥有一些世界领先的生产线，包括薄板、高速线材、列车车轮和h型钢等生产线。
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