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Self-drilling differential grouting combined bolt and anchoring method therefor
- Release time:2023-09-01
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Affilication of Author(s):
力学与土木工程学院Scope of patent:
国外Type of Patent:
国内State of Patent:
专利授权Application Number:
2018331664Number of Inventors:
1Service Invention or Not:
noApplication Date:
2018-08-28Authorization Date:
2020-01-02First Author:
Guoan Xu