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一种采空区局部充填控制地表沉陷的方法
- Release time:2020-10-30
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Affilication of Author(s):
矿业工程学院Disigner of the Invention:
曹新奇,李盼State of Patent:
专利授权Application Number:
2013354613Number of Inventors:
3Service Invention or Not:
noApplication Date:
2013-12-05Authorization Date:
2016-08-18First Author:
Ma Liqiang
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