бойові набої
multiple rounds simultaneous impact (MRSI)
rounds per man
rounds per minute (r.p.m.)
drop rounds on the line
equivalent service rounds
group of rounds
allotment of rounds
ball joint
ball socket
paint ball gun
rubber-ball grenade
rubber-ball round
angular ball bearing
angular contact ball bearing
annular double-row ball bearing
annular single-row ball bearing
annular single-row shielded ball bearing
ball bullet
ball check valve
ball cock
ball coupling
ball guide
ball head of propeller tube
ball holder
ball journal
ball mounting
ball powder
ball race
ball raceway
ball retaining spring
ball stud nut
ball thrust