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A kind of totally-enclosed guide and guards for tubing oblique milling three-roll piercer
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Head is trimmed in crank block type forestry
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A kind of buoy compression Wave power generation device using water as medium
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A kind of portable bar connects doffer
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A kind of adjustable mobile distribution device
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Multiple-transmission device for rolling mill
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Double-buffering forced reset explosion doors of inclined well and horizontal well
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Moveable short core rod device for Men tube mill
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A kind of pull core rod device that is used for the size-reducing mill group
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