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Recyclable rubber check dam
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Test device and method for measuring bonding force between bolt and ice
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Wedge-shaped strong water stop tooth transmission type water inlet and outlet valve
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A kind of construction method for the stalk formula ecology check dam administered applied to erosion groove
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A kind of reverse-flow axial energy dissipating valve
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A kind of the measurement syringe needle and measurement method of concrete coarse aggregate soft grain in aggregate
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A kind of truss-like sprinkler car with automatic telescopic container structure
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A kind of Intelligent Truss Structures formula sprinkler with reel
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The adjustable charing furnace internal-lining of one kind divides bracket
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