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一种变流量低温环型油雾喷射钻套

Release Time:2019-09-16  Hits:

First Author: Fuji Wang

Disigner of the Invention: 李跃,成德,贾振元,王帅飞,王小鞑

Application Number: CN201811022469.X

Authorization Date: 2018-09-03

Authorization Number: CN109128303A

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