deposition of two principal alloys (93 Pb:7 Sn) and (60 Sn:40 Pb) (se: bearing shell; compare: speculum plating), kahe sulami (93Pb:7 Sn) ja (60 Sn:40 Pb) sadestamine galvaanpindamise teel (vt kihtpindamine ; vrd peegelpindamine)