Journal Diameter Measuring System on Railway Car
chen shi-qian~1; li feng-shan~2; feng qi-bo~1; zhang zhi-feng~1(1.school of science; beijing jiaotong university; beijing 100044; china; 2.huhehaote technology department; baotou train branch; huhehaote railway bureau; neimenggu; huhehaote; 010050)
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