可逆 かぎゃく圧縮 あっしゅくではありませんでした
kagyakuasshukudewārimasendeshita

Noun
Desu Copula
no-Adjective

The polite, past negative form of 可逆圧縮

1. Was not reversible compression.; Was not losslessly compressed.

Past/Perfective
Negative
Polite
Formal Register
Computing