reducing valve nozzle,valve orifice /INDUSTRY-METAL/
[DE] niederdruckseitige bohrung
[EN] reducing valve nozzle; valve orifice
[FR] orifice de detente
valve orifice,valve's cross-sectional area /SCIENCE,ENG-MECHANICAL/
[DE] Ventildurchgangsquerschnitt; Ventilquerschnitt
[EN] valve orifice; valve' s cross-sectional area
[FR] section de passage de soupape; section de soupape