最小 さいしょう可知 かち差異 さいじゃなかったです
saishōka chisaijanakattadesu

Noun
Desu Copula

The polite, past negative form of 最小可知差異

1. Wasn't the minimum detectable difference.; Wasn't the smallest discernible difference.

Past/Perfective
Negative
Polite
Casual Register