Zero-gravity seat control method, electronic equipment and medium
Water floating photovoltaic subarray displacement buffer
Vehicle refrigeration system integrated device and vehicle
Vehicle protection mechanism, application method and vehicle
Unmanned aerial vehicle precise seed distribution device
Unmanned aerial vehicle cargo hold air-drop system and air-drop method
Train track occupation detection method and device based on satellite positioning
Train speed prediction method and device, electronic equipment and storage medium
Train control system based on satellite communication and public cellular communication
Traffic equipment invisible pile management system and method based on positioning technology