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Keywords from Image Description:
Weltkarte der Netzspannungen und Netzfrequenzen.svg en Countries of the world colored according to their nominal power net voltage and frequency de Lnder der Welt eingefrbt entsprechend ihrer nominellen Netzspannungen und Netzfrequenzen pl Kraje wiata pokolorowane zgodnie wystpujcym nich napiciem sieciowym czstotliwoci ru uk