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вспомогательная нервюра служит для придания крылу определённого профиля stresses
Makarov.	a false rib assists in maintaining the airfoil form of the wing; a form rib assists in maintaining the airfoil form of the wing; a former rib assists in maintaining the airfoil form of the wing; false rib assists in maintaining the airfoil form of the wing; form rib assists in maintaining the airfoil form of the wing; former rib assists in maintaining the airfoil form of the wing