While such structural beams exhibit {HEAD ~ satisfactory strength} in tension, {TAIL ~ compression}, and bending, these beams are relatively weak in axial torsion 
in
While such structural beams exhibit { HEAD ~ satisfactory strength } in tension , { TAIL ~ compression } , and bending , these beams are relatively weak in axial torsion
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH