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person:("Liu, jiang")
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person:("Liu, liang")
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person:("Liu, qian")
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person:("Liu, xiang")
Auxiliary driving method, system and device of paver and computer program product
Method and system for controlling engine speed and boom-type engineering machine
Large-flow road section harbor type parking belt structure and layout method thereof
Louver for ventilation of mechanical room of railway vehicle
Underwater robot for rapid maintenance of dam body bottom cracks
Back door supporting rod structure, automobile back door and automobile
Stereo garage vehicle charging control method, system, medium and equipment
Rechargeable stereo garage parking control method and device and electronic equipment
Elevator reformation and installation type for old residential building
Pit-free elevator reformed and additionally mounted in old residential building
Method for measuring sinkage of track bed and related assembly
Isolation guardrail with video monitoring function and use method thereof