Even if there is a change in {HEAD ~ delay amount} due to the variation in {TAIL ~ environment}, appropriate delay processing can be conducted by the delay processing part 
Even if there is a change in { HEAD ~ delay amount } due to the variation in { TAIL ~ environment } , appropriate delay processing can be conducted by the delay processing part
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH