In other embodiments, {HEAD ~ the pedestals} 46 may be offset along {TAIL ~ a line} generally orthogonal to a direction of an average flow of gas 51 through the cavity 14 
offset along
In other embodiments , { HEAD ~ the pedestals } 46 may be offset along { TAIL ~ a line } generally orthogonal to a direction of an average flow of gas 51 through the cavity 14
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH