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A kind of bridge construction and its application method
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A kind of bridge construction
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High calcium ferment and preparation method thereof
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A kind of high deceleration device
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A method of reducing ribbon conveyer noise
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A kind of new-energy automobile method for starting
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A kind of adjustable retarder
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A method of extending high-speed electric expreess locomotive service life
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A kind of new-energy automobile clutch
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A kind of cardiological patients rehabilitation exercise device
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A kind of Internal Medicine-Cardiovascular Dept. nursing monitor
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A kind of 1000V low-voltage alternating-currents power distribution cabinet
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