実装 じっそう標準 ひょうじゅんじゃなかったです
jissōhyōjunjanakattadesu

Noun
Desu Copula

The polite, past negative form of 実装標準

1. Wasn't implemented as standard.; Wasn't a standard implementation.

Past/Perfective
Negative
Polite
Casual Register
Computing