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A kind of air quality precaution device
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Sparrow hawk wing section bionic method for blades of horizontal-axis wind turbines
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Disk-type brake
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Saddle of bicycle
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Superspeed bicycle with internal 4-gear speed variation
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Vibration damper of front fork
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Rear wheel driver with internal 4-gear speed variation
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Single tub vacuum dewatering washing machine
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Language identification method whose identification rate is approaching to 100%
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Assembled safety door
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CN1072986A
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The hinge that has adjustable stepless locator
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