Key technologies and applications of realistic rendering in 3D virtual scene Key technologies and applications for internet of video things Key technologies and applications of rigid-flexible coupling 3D printing robots Key technologies and applications of autonomous underwater vehicles Key technologies and applications of intelligent food risk traceability Key technologies and applications of intelligent spray-painting robots Key technologies and applications on location-based pan-information map Key technologies and applications in fishery forecasting Key technologies and applications of machine learning New technologies and applications of GNSS augmentation for civil aviation