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person:("zhang ziyi")
Intelligent nested spiral artificial miniature swimming robot
Worm and gear clearance adjusting mechanism for automobile steering system
Automatic worm and gear clearance adjusting mechanism for automobile steering system
Welding structure for inner plate and outer plate of box cover
Hook support structure of front wall sound insulation pad
Plastic guide rail structure convenient to adapt to automobile rear door glass
Structure for adding side flanging and glue groove to inner plate of engine hood
Highway mixed heterogeneous traffic flow rainy day variable speed limit control system and method