As the housing is heated, the different coefficents of {HEAD ~ thermal expansion} of {TAIL ~ components} of the housing cause the joint between the workpiece and housing sections to be sealed 
of
As the housing is heated , the different coefficents of { HEAD ~ thermal expansion } of { TAIL ~ components } of the housing cause the joint between the workpiece and housing sections to be sealed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH