断熱 だんねつ近似 きんじじゃなかったです
dannetsukinjijanakattadesu

Noun
Desu Copula

The polite, past negative form of 断熱近似

1. Wasn't a thermal insulation approximation.; Wasn't an approximation of thermal insulation.

Past/Perfective
Negative
Polite
Casual Register
Physics