支持格式（建议上传3mf格式）： .3ds, .3mf, .amf, .blend, .dwg, .dxf, .elesat, .f3d, .f3z, .factory, .fcstd, .iges, .ipt, .obj, .ply, .py, .rsdoc, .scad, .shape, .shapr, .skp, .sldasm, .sldprt, .slvs, .step, .stl, .stp, .studio3, .zpr, .stpz, .fcstd