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一种钻孔与螺旋铣孔组合的刀具

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First Author:Renke Kang

Disigner of the Invention:Dong Zhigang,杨国林,zhuxianglong,高宇,Dongming Guo

Application Number:CN201810421016.8

Authorization Date:2018-05-04

Authorization number:CN108620641A

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