first voltage increase
/ˈfɜːst ˈvəʊltɪdʒ ˈɪŋkɹiːs/
n
English · first voltage increase中文 · 一次升压Español · primer aumento de la tensiónFrançais · première élévation de la tension
意味：Increase in voltage: transformers carry high-voltage electricity produced by the alternator to reduce loss during transport.