单词 | hurricane air stemmer |
释义 | hurricane air stemmer [`hǝr·ǝ´kān `er ´stem·ǝr] MINING ENGINEERING A mechanical device for rapidly tamping shotholes; consists of a funnel connected by a T piece to the charge tube, with a connection to a compressed-air column; sand is put in the funnel and injected into the shothole as the charge tube is withdrawn. |
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