生物 せいぶつ燃料 ねんりょう電池 でんちであれば
biseibutsunenryōdenchideareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 微生物燃料電池

1. If it is a microbial fuel cell; When it is a microbial fuel cell

Ba Conditional