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Method for Making personalized degradable metal stent or internal fixing device based on 3D printing
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Method for monitoring source of atmospheric particulate matters in real time
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Detachable iron chain connecting device
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Method for preparing ursodeoxycholic acid by catalyzing with cyclic enzyme
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Red mud baking-free brick and preparation method thereof
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Garlic harvesting vibrating shovel with adjustable soil penetration depth
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Garlic harvesting vibrating shovel with adjustable row spacing
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