ぎゃく浸透 しんとう ほうじゃありませんでした
gyakushintōhōjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 逆浸透法

1. Was not reverse osmosis.; Wasn't reverse osmosis.

Past/Perfective
Negative
Polite
Terminal Form
Chemistry