Chúncuì cóng jìshù jiǎodù láishuō, zhège fāng'àn shì kěxíng de.
Purely from a technical standpoint, this plan is feasible.
Tips
grammar
纯粹 can function as both an adjective (纯粹的巧合 = pure coincidence) and an adverb (纯粹是胡说 = purely nonsense). As an adverb, it means 'simply' or 'nothing but.'