白板报

China’s Bullet Trains Trip on Technology – WSJ.com

RT @akid_: 华尔街日报今天的文章说，动车事件的原因是：“本地工程师没有完全理解采用进口原件的高铁控制网络——包括防止列车追尾的信号系统” ow.ly/6Lx0N 这是采访了十多位中外铁路专家后的结论

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