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一种螺旋桨铸型结构

Release Time:2019-09-17  Hits:

First Author: 姚山

Disigner of the Invention: 张雪,姚平坤,赵枢明,陈晓宇

Application Number: CN201811170891.X

Authorization Date: 2018-10-09

Authorization Number: CN109226690A

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