[討論] 位於彎道上的鐵軌磨損
這三張位於彎道上的鐵軌,可以看到鐵軌磨損的情況,如果不抽換鐵軌的話,列車一直
駛過,最終會不會導致列車出軌?
http://ppt.cc/6kUW
http://ppt.cc/G0rx
http://ppt.cc/slJ2
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