Anh
flow-through hole
flow-through opening
Đức
Durchflussoeffnung
Pháp
orifice d'écoulement
orifice de passage
Durchflussoeffnung /ENG-MECHANICAL/
[DE] Durchflussoeffnung
[EN] flow-through hole; flow-through opening
[FR] orifice d' écoulement; orifice de passage