平均 へいきん故障 こしょう時間 じかんじゃないです
heikinkoshōjikanjanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 平均故障時間

1. Not Mean Time Between Failures.; It's not the Mean Time Between Failures.

Negative
Polite
Casual Register
Computing