A slide member includes a surface layer having {HEAD ~ a slide surface} for {TAIL ~ a mating member} 
for
A slide member includes a surface layer having { HEAD ~ a slide surface } for { TAIL ~ a mating member }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL