лонжерон angolul

longeron▼(thin strip of wood or metal)
noun
[UK: ˈlɒn.dʒə.rən] [US: ˈlɑːn.dʒə.rən]

spar [spars]▼(aeronautics: beam-like structural member)
noun
[UK: spɑː(r)] [US: ˈspɑːr]