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Trifaza sistemo eo.svg it Diagramma delle fasi di un sistema trifase eo Diagramo de la fazoj de trifaza sistemo own Umbert' File fasspnningar svg File phase AC waveform svg Kreita surbaze de File fasspnningar svg kaj File phaseACwaveform svg AC waves Threephase electric power SVG electricity Diagrams in Esperanto