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CN112178162A
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Speed reducer with built-in chuck
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CN112121527A
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Gas-slag-water three-phase separation device
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CN112127817A
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Capsule type hole sealing device and hole sealing pipe for drilling
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CN111852332A
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Automatic rod adding drilling machine with drill rod box
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CN111927348A
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Middle rod adding method of guide rail type drilling device
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CN111706255A
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Double-rotation automatic drilling machine host
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CN111140170A
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Complete equipment for transverse large-diameter hole forming in coal pillar area of soft coal seam and hole forming process
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CN111173449A
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Large-torque drilling machine for coal mine
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CN111188574A
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Intelligent drilling and cave-making integrated complete equipment for coal mine
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CN111155948A
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Drilling machine capable of automatically drilling and automatically withdrawing drill and automatic control method
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CN111058766A
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Downward drilling machine with azimuth angle adjusting function
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CN110762085A
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Filter core quick change structure
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CN110539775A
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stepping mechanism for rail car
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CN110630175A
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Foldable omnibearing drilling mechanism
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CN110410023A
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One kind closing water drilling bar
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CN111828297A
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Wireless remote control type high-pressure water pump station for coal mine
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CN111434931A
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Hydraulic vibration device
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CN111360714A
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Hydraulic holding device
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A kind of brill rushes dual-purpose three wings screw high-pressure sealing drilling rod
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CN109113782A
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A method of cave gas control is made suitable for coal mine suction road downlink drilling
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