A method 1, wherein the length of the fiber ends released by {HEAD ~ the action} of {TAIL ~ said external force} is at least 3 mm 
of
A method 1 , wherein the length of the fiber ends released by { HEAD ~ the action } of { TAIL ~ said external force } is at least 3 mm
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH