英语语法分析

AIM: To evaluate the synergistic action of sodium nitroprusside (SNP) and isoproterenol (ISO) on canine trachealis, and to explore the mechanism of synergism.

目的：研究硝普钠（SNP）与异丙肾上腺素（ISO）对犬气管平滑肌松弛作用是否存在协同关系，并分析协同的机制。