Anh
lamp efficacy
luminous efficacy
Đức
Beleuchtungswirkungsgrad
Lichtausbeute
Pháp
efficacité de la lampe
ηlamp
efficacité lumineuse
lamp efficacy /ENG-ELECTRICAL/
[DE] Beleuchtungswirkungsgrad
[EN] lamp efficacy
[FR] efficacité de la lampe; ηlamp
lamp efficacy,luminous efficacy /ENG-ELECTRICAL/
[DE] Lichtausbeute
[EN] lamp efficacy; luminous efficacy
[FR] efficacité lumineuse