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一种预支撑精准卸压感知煤层回采模拟试验装置及方法
2021-06-08 Hits:
Affilication of Author(s):齐鲁交通学院
Type of Patent:发明
Number of Inventors:3
Service Invention or Not:no
Application Date:2021-04-27
Application Date:2021-04-27
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