周波 しゅうは すう逓倍 ていばい じゃありませんでした
shūhasūte iba ikija arimasendeshita

Noun
Desu Copula

The polite, past negative form of 周波数逓倍器

1. Was not a frequency multiplier.; Was not a frequency multiplier, politely.

Past/Perfective
Negative
Polite
Terminal Form