вентильована планка; вентильована прицільна планка
bearing rib
bottom rib of piston
cooling rib
elevated rib
feed rib
guide rib (of a machine gun)
guide rib
intermediate rib
nose rib
rear rib
rib cap
rib flange
rib web
root rib
tip rib
rib
semi-rigid - rigid inflatable boat (RIB)
nose of rib