可変 かへん抵抗 ていこう ではありませんでした
kahente ikōkidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 可変抵抗器

1. Was not a variable resistor.; Was not a potentiometer.

Past/Perfective
Negative
Polite
Formal Register
Electrical Engineering