60 kg/m钢轨12号提速道岔曲线尖轨磨耗机理探讨
60 kg/m강궤12호제속도차곡선첨궤마모궤리탐토
Discussion on Mechanics to Reduce Wearing of Curve Point of 60 kg/m Rail No.12 Enhancing Velocity’s Frog
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