After a long time in research and practice, Dragon Mining Group has recently developed new mineral wheelindependent hydraulic changer on mine was put into use in the Wali.
经过长期反复研究、实践，近日龙矿集团自主研制的新式矿车轮对液压拆装机在洼里煤矿正式投入使用。
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The plastic deformation would more easily occur due to the impact contact, but it is independent to the shape of tread. However, to eliminate the irregularity between the wheel and rail is necessary.