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Keyword [Long boreholes in roof]
Result: 1 - 2 | Page: 1 of 1
1.
Research On The Technology Of Long Boreholes In Roof Instead Of High Drainage Roadway In N2201 Work Face Of Yuwu Coal Mine
2.
The Main Controlling Factors And Influence Laws Of The Gas Drainage Effect Of The Long Hole In The Roof
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