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介绍了对２６０ｔ鱼雷形混铁车车轮使用ＴＢ锥形踏面与ＬＭ型踏面进行的磨耗对比试验，证明使用ＬＭ型踏面有明显经济效益
This paper introduces the comparison of the abrasion of TB cone tread and LM tread of 260t torpedo-shaped mixed-wheel vehicle, which shows that the use of LM tread has obvious economic benefits