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Q & A website screenshot Q & A website screenshotmonero price coinspot, Therefore , starting in 1997 , the railway department applied the phased results of the research and development of high-speed railway systems in six stages to the reconstruction of existing ordinary speed lines. This is the famous "six speedups" in the history of Chinese railways. Each time a large speed increase, although the increase in train speed per hour that the outside world can feel is not particularly large, railway workers and practitioners in related industries know the way, there are many highlights, and there are even many landmarks. breakthrough.