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一种松软煤层瓦斯抽采钻孔失稳规律监测装置，实用新型，专利号：ZL201821182063.3；

Release time:2022-04-07 Hits:

Service Invention or Not:  no

Next One:一种松软煤层瓦斯抽采钻孔失稳规律监测装置及方法，发明，专利号：ZL201810821252.9；

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