Key technologies and applications of intelligent food risk traceability Key technologies and applications of intelligent spray-painting robots Key technologies and applications for internet of video things Key technologies and applications in fishery forecasting Key technologies and applications of autonomous underwater vehicles Key technologies and applications of machine learning Key technologies and applications of muck construction waste resource utilization Key technologies and applications of realistic rendering in 3D virtual scene Key technology and application of intelligent test system based on cloud architecture Core technologies and applications of data asset management