ねつ力学 りきがく だい いち法則 ほうそくであれば
netsurikigaku daiichi hōsokudeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 熱力学第一法則

1. If thermodynamics' first law…; When thermodynamics' first law…

Ba Conditional
Physics