Data distribution storage method and device, equipment and medium
Light-transmitting skin coating and positioning device
Artificial intelligence diving guarantee driving mechanism
Automatic direction adjusting mechanism for rescue internet-of-things breathing tube
Intelligent protection snorkeling equipment based on Internet of Things rescue
Device for preventing airflow mixing in passenger cabin of aircraft
Light and small unmanned aerial vehicle multispectral remote sensing image acquisition device
Maintainable hard motorized pavement vehicle front paving device and maintenance method