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Reinforced pole plate of road power supply system
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Air filtering and humidity adjusting apparatus
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Brush head of current collector brush of electric car with current collection and storage combined energy system
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4 bit-10 state contact-press composite key
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Traffic signal indicating and control system for vehicle-line distributed dedicated line
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Umbrella with water-throwing function
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Multi-lift car elevator vertical-horizontal motion transformation auxiliary accelerating device
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Multi-lift-car circulation elevator falling protection safety device
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