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person:(feng, peng)
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person:(feng, jing)
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person:(feng, ming)
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person:(feng, ding)
Mechanism for popping up and opening brake parachute of aircraft
Connector socket for secondary positioning of contact element
Multi-sensing robot for underwater detection and use method
Self-balancing hoisting device for building construction
Installation equipment and method for fabricated bridge deck system prefabricated component
Segmented insulator and high-speed overhead rigid contact network
Straddle type monorail five-axle drive bogie system, rail vehicle and rail system