断熱 だんねつ近似 きんじではありませんでした
dannetsukinjidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 断熱近似

1. Was not a thermal insulation approximation.; Was not an adiabatic approximation.

Past/Perfective
Negative
Polite
Formal Register
Physics