可逆 かぎゃく圧縮 あっしゅくじゃないです
fuka gyakuasshukujanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 不可逆圧縮

1. Not lossless compression.; It's not lossless compression.

Negative
Polite
Casual Register
Computing