Coal seam spot sampling device

The utility model relates to a coal seam fixed point sampling device which comprises a drill bit and a drill rod connected to the tail end of the drill bit, the drill bit is hollow, a sampling opening is formed in the front end of the drill bit, an installation groove is formed in the inner wall of...

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Bibliographische Detailangaben
Hauptverfasser: SHI JUNMEI, GAO LIANGUO
Format: Patent
Sprache:chi ; eng
Schlagworte:
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