Patent AT-E400725-T1: [Translated] PNEUMATIC PERFORATING DEVICE
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The invention is referring to a pneumatic perforator for drilling in mining industry having a head cylinder including the admission valve of the compressed air and...
本发明涉及一种用于矿业钻探的气动穿孔机，该穿孔机的气缸头包含压缩空气进气阀以及……
