Ground truth 3d tetrahedra models

This dataset contains three 3D model files of a tetrahedron, each at a different scale, in .stl format. These models were generated from a 3D model file authored by Anenome at Thingiverse: https://www.thingiverse.com/thing:942120 .本数据集包含三个不同缩放比例的四面体三维模型文件，格式均为.stl。所有模型均基于Thingiverse平台用户Anenome创作的三维模型文件生成，原模型链接为：https://www.thingiverse.com/thing:942120。