mid: 1578
url: http://www.onr.com/user/nsongtan/train.wrl
ref_url: http://www.onr.com/user/nsongtan/vrmlfiles.html
format: wrl 
pid: 11440
polygons: 574
connected_components: 23
average_dihedral_angle: 1.33252
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.208732, ymax = 0.370015, zmax = 0.975
avg_depth: 1.397045
center: (0.115685,0.196029,0.508812)
scale: 0.523242
principle_axes: (0.008778,-0.087691,0.996109), (-0.008704,-0.996116,-0.087615), (-0.999924,0.007901,0.009507)
principle_values: (0.073272,0.007735,0.003706)