background: a comprehensive database, comprising geometry and properties of human teeth, is needed for dentistry education and dental research. the aim of this study was to create a three-dimensional model of human teeth to improve the dental e-learning and dental research.   methods: in this study, a cross-section picture of the three-dimensional model of the teeth was used. ct-scan images wer...

The digitization of power grid projects is a development requirement in the era big data, as well an inevitable for State Grid Corporation China to build digital grids and improve life-cycle management. Three-dimensional design establishes three-dimensional models ground conductors, insulators, fittings through line electrical majors, completes poles towers scene; structure majors should establ...