絶縁 ぜつえん増幅 ぞうふく でしょう
hizetsuenzōfukukideshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 非絶縁増幅器

1. Non-isolating amplifier, probably.; It's likely a non-isolating amplifier.

Polite
Presumptive
Conjecture
Computing