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person:("zhang, haiyang")
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person:("zhang, haiping")
Anti-shaking protection device for lifting rope of crane
Gas pipe and channel comprehensive arrangement structure for dual-fuel container ship
Traffic signal lamp recognition device for visually impaired people
Device for assisting people with visual impairment in taking bus
Automatic charging system and method for low-voltage battery of electric vehicle
Voice interaction system and method based on vehicle-mounted camera