じゅん方向 ほうこう電圧 でんあつ降下 こうかでしょう
junhōkōden'atsukōkadeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 順方向電圧降下

1. Forward voltage drop likely.; Probably a forward voltage drop.

Polite
Presumptive
Conjecture