Irradiation from only one side would call for continuous rotation of {TAIL ~ the bellows} during the irradiation for uniform exposure and is, therefore, not preferred even though this, too, would result in {HEAD ~ a uniform modification} of the hardness of the second wall region 2 
Irradiation from only one side would call for continuous rotation of { TAIL ~ the bellows } during the irradiation for uniform exposure and is , therefore , not preferred even though this , too , would result in { HEAD ~ a uniform modification } of the hardness of the second wall region 2
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH