measuring the transfer data at the predetermined transfer position again, for a guided vehicle which needs measurement of the machine difference data again, to newly determine machine difference data to update the transfer data at {HEAD ~ each} of {TAIL ~ the transfer positions} 
measuring the transfer data at the predetermined transfer position again , for a guided vehicle which needs measurement of the machine difference data again , to newly determine machine difference data to update the transfer data at { HEAD ~ each } of { TAIL ~ the transfer positions }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL