STL

The STL file format is a file format used to describe three-dimensional objects. It consists of a series of triangular faces, each face composed of three vertices and a normal vector. It is commonly used in 3D printing and computer-aided design (CAD) software, where three-dimensional models can be exported as STL files for further processing and manufacturing. The STL file format is simple and easy to use, making it widely used in various fields.