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Needle holding device for clinical ophthalmic surgery
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Teaching attendance system for teaching management
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Energy-saving and heat-insulating roof structure
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Vehicle exhaust evaluation system and method based on big data
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A kind of Novel decorative lighting accessory
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A kind of automatic leek cropper
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A kind of dual-purpose stair based on screw-thread fit driving
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One kind being based on worm geared deformation stair
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A kind of dual-purpose stair driven based on screw-thread fit that architectural engineering uses
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A kind of architectural engineering use based on worm geared deformation stair
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A kind of dual-purpose stair
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A kind of dual-purpose stair that architectural engineering uses
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A kind of deformation stair that architectural engineering uses
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A kind of deformation stair for building
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Disinfection nursing device for operation of general surgery
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Aluminium alloy semisolid three-in-one rapid cooling slurrying device and method
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Rheology and thixotropy integrated casting and forming machine
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Aluminum alloy and preparation method thereof
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Traditional Chinese medicine for treating liver depression and blood stasis syndrome type breast nodule diseases
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