a plurality of {TAIL ~ columnar crystals} precipitated on said base member so as to extend in proximity to one another form {HEAD ~ a side} of said base member and voids that are formed between adjacent columnar crystals and open to said slide surface to serve as lubricant reservoir means and 
a plurality of { TAIL ~ columnar crystals } precipitated on said base member so as to extend in proximity to one another form { HEAD ~ a side } of said base member and voids that are formed between adjacent columnar crystals and open to said slide surface to serve as lubricant reservoir means and
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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