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Underground medium-length hole angle measuring tool
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One-step well completion method for high-depth large-section medium-deep hole
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Process for constructing tailing dam by using cyclone
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A kind of drying grate automatic distributing device
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A kind of cold region factory built-up areas grouting and reinforcing technology
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A kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique
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A kind of stable slurry of extremely frigid zones complicated geological grouting and consolidation on foundation
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Processing technology of polymetallic ore containing gold, zinc and iron
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Wind power ganged atomizing de-dusting apparatus for blasting face
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A kind of pair of opencut carries out the construction method of slope ecological protection
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A kind of Underground laneway plugging method
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