単相 たんそう交流 こうりゅうじゃありませんでした
tansōkōryūjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 単相交流

1. Was not single-phase AC.; Was not a single-phase alternating current.

Past/Perfective
Negative
Polite
Terminal Form
Electrical Engineering