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Novel technical scheme of applying photovoltaic technology to coal-fired power plant
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Fluoridated dental composite resin material contributing to resisting secondary caries
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Ceramic blank molding die capable of meeting demand for fast mold release
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Toxic polluted air replacing device applied to Bridgman method single crystal production shop
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Musical instrument wireless transmission system based on 2.4G wireless digital audio technique
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Inflatable high-level lifesaving equipment
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Buoyancy tank ship
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