bar code， bar code reader

bar machine ice bar freezer

bar to bar insulation

bar to bar resistance

bar-to-bar test

bar-to-bar voltage

bar-to-bar voltage peak

five-bar linkages similar to four-bar linkages

aft end stiffener

angle stiffener

axial stiffener

base plate stiffener

bearing stiffener

bend stiffener

bracing stiffener

bulkhead stiffener

cross stiffener

duct stiffener

end plate stiffener