The high bending elasticity results in a long average service life and, in {HEAD ~ conjunction} with {TAIL ~ a low stretch related slip} and correspondingly small speed loss, in a high degree of efficiency 
with
The high bending elasticity results in a long average service life and , in { HEAD ~ conjunction } with { TAIL ~ a low stretch related slip } and correspondingly small speed loss , in a high degree of efficiency
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 TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH