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Ventilation system and method for embedded air return of aircraft seat
Automatic positioning and clamping equipment for refrigerator car box body
In-station marshalling departure method for group trains
Freight railway dispatching and train control cooperation method and system
Heavy haul railway virtual marshalling radio block center switching method, equipment and medium
Train length calculation method and device based on train position and interlocking state
Method and device for determining fault protection area
Grade conversion method and device of train operation control system
Trackside auxiliary decision-making center equipment based on hybrid expert model
Liquid hydrogen fuel aircraft and design method thereof
Sliding top cover of railway maneuvering equipment vehicle
Support vehicle for railway thermal insulation vehicle