Anh
pre-rotary vane
pre-rotation vane
Đức
Vorleitschaufel
Pháp
aube de prérotation
ventelle
Vorleitschaufel /SCIENCE,ENG-MECHANICAL/
[DE] Vorleitschaufel
[EN] pre-rotary vane; pre-rotation vane
[FR] aube de prérotation; ventelle