mid: 1473
url: http://www.downtube.com/animbike.wrl
ref_url: http://vrml.nethome.com.cn/
format: wrl 
pid: 1867
polygons: 4448
connected_components: 144
average_dihedral_angle: 0.742879
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.975, ymax = 0.557643, zmax = 0.314071
avg_depth: 1.483181
center: (0.507604,0.286754,0.172627)
scale: 0.517823
principle_axes: (-0.996820,-0.079617,0.003397), (0.079668,-0.996638,0.019121), (-0.001863,-0.019331,-0.999811)
principle_values: (0.058347,0.019690,0.000818)