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一种松紧度测试锚杆及松紧度测试系统

Release Time:2019-09-21  Hits:

First Author: 宋钢兵

Disigner of the Invention: 霍林生,张哲,汪波

Application Number: CN201621321030.3

Authorization Date: 2016-12-02

Authorization Number: CN206581961U

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