Aviation Dictionary
پشت بند، نبشی سرتاسری لبه بالهای چوبی جهت تقویت اتصالات .
A brace made of thin plywood used to reinforce the glue joints of all the upright and diagonal braces used in a wooden wing rib. The continuous gusset runs the full length of the rib, rather than being made in the form of small separate gussets at each joint.