人工 じんこう放射 ほうしゃ せい核種 かくしゅだったら
jinkōhōsha sei kakushudattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 人工放射性核種

1. If it were artificial radionuclides; If artificial radionuclides existed

Tara Conditional