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钢轨罩能使火车在破损钢轨段达12．7cm的轨道上以18．53km／h的速度通过。它可直接安装在一条轨枕上、轨枕间的焊接接头上或鱼尾板上，也可安装在任何直轨或小于18°的弯轨的轨道断点上。破损钢轨罩@陈宁
The rail cover allows the train to pass at a speed of 18.53 km / h on a track of 12.7 cm in the damaged rail section. It can be mounted directly on a sleeper, on a welded joint between sleepers or on a fish plate, or on any rail breakpoint on any straight rail or curved rail less than 18 °. Damaged rail cover @ Chen Ning