塩分 えんぶん濃度 のうど 発電 はつでんじゃありませんでした
embunno udosa hatsudenjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 塩分濃度差発電

1. Was not salinity gradient power.; Was not a salinity gradient power generation system.

Past/Perfective
Negative
Polite
Terminal Form
Electrical Engineering