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A kind of foldable electric vehicle pedal
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A kind of electrical salf-walking car detector
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A kind of electric vehicle pedal can retracting device
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A kind of electric bicycle detecting system based on positioning system
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A kind of electric bicycle intelligent speed-limiting controller
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A kind of foldable electric vehicle pedal
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A kind of anti-tamper driving device of electric bicycle
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A kind of electric bicycle feedback inverse charging device
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A kind of electric bicycle speed-measuring weighing detection device
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A kind of electric bicycle temperature alarming device
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Frictional electricity effect presentation device mounted with discharge metallic ball
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A kind of sales counter self-checkout machine
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One kind is hand-held to turn to fruit bagging device
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Teaching apparatus for physical characteristic of ellipse
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Experimental device for Weissenberg effect
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Power generation experiment equipment
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Small automatic egg casing device
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Ultrasonic ranging teaching experimental apparatus
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Tire clamping and installing device
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Building hanging basket anti-oscillation damping device
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