平衡 へいこう移動 いどう法則 ほうそくじゃなかったです
e ikō idōno hōsokujanakattadesu

Noun
Desu Copula

The polite, past negative form of 平衡移動の法則

1. Wasn't the law of conservation of momentum.

Past/Perfective
Negative
Polite
Casual Register