Beleuchtungswirkungsgrad /ENG-ELECTRICAL/
[DE] Beleuchtungswirkungsgrad
[EN] lamp efficacy
[FR] efficacité de la lampe; ηlamp
Beleuchtungswirkungsgrad /ENG-ELECTRICAL/
[DE] Beleuchtungswirkungsgrad
[EN] coefficient of utilisation; coefficient of utilization; utilisation factor; utilization factor
[FR] facteur d' utilisation