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大深径比阶梯孔磨削加工方法

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First Author:Renke Kang

Disigner of the Invention:zhuxianglong,焦振华,Shang GAO,Dong Zhigang,张雪

Application Number:201910544893.9

Authorization Date:2019-06-21

Authorization number:ZL 201910544893.9

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