tuyère à section variable
/tyijˈɛʁ a sɛksjˈɔ̃ vaʁjˈabl/
n
English: variable ejector nozzle · 可变喷口
Sens：Duct whose mouth widens as the plane climbs, thus enabling the engines to increase output.
English: variable ejector nozzle · 可变喷口