double-j butt weld double-j groove double-lane lock double-lap joint double lathe double layer double-layer belt double-layer screen double-layer winding double-leaf mitre gate double length double-length number double-length operation double-length word double-level bridge double-lever jib double-lever shears double-lift cam double-lift camses double-lift lock |
double-j butt weld челен заваръчен шев с двустранно J-образно скосяване на краищата Търсената дума е намерена |