https://vocabularyserver.com/cnr/ml/snowterm/it/https://vocabularyserver.com/cnr/ml/snowterm/it/xml.php?skosTema=12870distribuzione della tensione https://vocabularyserver.com/cnr/ml/snowterm/it/xml.php?skosTema=12870 parametri fisici BT https://vocabularyserver.com/cnr/ml/snowterm/it/xml.php?skosTema=12870 distribuzione di tensione UF