Research on Filtering Approximation Algorithm in the Measurement of Roundness Error
liu yan~(1; 2); zuo chun-cheng~1; ding guang-zheng~3; li li-gang~1; zhang xue-jun~1(1.college of mechanical science and engineering; jilin university; changchun 130025; 2.college of informationand electric engineering; shandong institute of business and technology; yantai 260005; 3.oil film bearing subco.; taiyuan heavy industry co.ltd.; taiyuan 030024)
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