відкидний (напр. сидіння)
back-to-back circuit
back-to-back connection
back-to-back radio stations
back-to-back relay
folding knife
folding portable bridge
folding-fin aircraft rocket (FFAR)
folding bipod
folding leaf spring
folding leg
folding screw adjustment rear sight
folding shield
folding sight leaf
folding trigger
folding stock (folded stock)
folding-stock anchor
side-folding stock
under-folding stock
folding ladder
folding strut
folding step
folding-rotor convertiplane
folding
folding propeller
adjustable metallic folding blade sight assembly
adjustable metallic folding, short-range blade sight assembly
back-up fire control
back-up system
cut back co-operation
I read back
play back kit
pull back