需要 じゅよう供給 きょうきゅう法則 ほうそくだったら
juyōkyōkyūno hōsokudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 需要供給の法則

1. If/when supply and demand law…; If supply and demand law were…

Tara Conditional