ナノ結晶 けっしょうではありませんでした
nanokesshōdewa arimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of ナノ結晶

1. Was not nanocrystals.; Was not a nanocrystal.

Past/Perfective
Negative
Polite
Formal Register