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person:("wang qingchun")
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person:("wang yingchun")
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person:("yang qingchun")
Large-loading multi-point coordinated undercarriage fixed connection structure
Composite material beam structure with appearance penetrating aircraft body
Folding mechanism of wings of an unmanned aerial vehicle
Field damage assessment method for structure static test and thermal strength test
Light heat-proof force-bearing stealth integrated structure
Height-adjustable honeycomb reinforcing bush with matched internal thread and external thread
Adjustable rocket boosting structure and method suitable for unmanned aerial vehicle
Overwater detachable floating type mobile operation platform