variable frequency
| convertor
| variable frequency abbr. | |
| gen. | Frequenza variabile |
| convertor abbr. | |
| mech.eng. el. | mutatore; convertitore |
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| Frequenza variabile | |||
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variable frequency : 6 phrases in 4 subjects |
| Electric traction | 1 |
| Electronics | 3 |
| Mechanic engineering | 1 |
| Transport | 1 |